Information Age & Silicon Revolution (1960–1990)Industrial Automation & Programmable Production

Lemelson Carrier-Programmed Production Line

US 3,313,014

Carrier-Mounted Program Control, Marker Feedback, Station Coupling, and Workpiece Prepositioning

Inventor(s)Jerome H. Lemelson

Grant DateApril 11, 1967

Filing DateApril 8, 1965

LocationMetuchen, New Jersey

Jerome H. Lemelson's 1967 grant claims an automatic production line in which an individually carried workpiece can be routed to a selected station, positioned and secured there, coupled to the station's controls, operated under a carrier-mounted program, then released for the next station. Its legal center is the coordinated relationship among carrier, guideway, marker sensing, program record, securing means, and machine tool, not a claim to factory automation in the abstract.

USPTO PDF

Engineering Analysis & Physical Principles

How It Works: Step-by-Step Mechanical & Physical Breakdown

The bottleneck was not merely moving a part down a line. A conventional transfer line repeats one set-up against one workpiece; changing hole locations, finish, inspection, or assembly could require idling or rebuilding the line. Lemelson placed a programmable controller with each work carrier. Marker sensing identifies a station, the carrier stops and locks, its controller couples to the station's machine controls, and the sequence later releases the carrier. That architecture lets the same physical route support different programmed operations without treating every carrier as identical.

The Core Breakthrough Mechanism

The source's causal chain is discrete and mechanical: a carrier travels along guideway 21 under Mx; a station marker triggers controller 47; the carrier is retained; My and Mz preposition the platform; contacts 86 and 87 couple the portable program to machine MT; the machine cycle runs; then the controller reverses the positioning motions and restarts Mx. The grant supplies no travel distance, mass, speed, tool force, electrical rating, or timing. The shared kernel therefore represents $q=[x,y,z,\theta]$ as normalized pose coordinates and evaluates the claim-linked state $ready=markerMatched\land locked\land coupled$ , rather than inventing SI performance numbers.

Interactive Real-Time Physical Simulation

Drag to rotate · Scroll to zoom · Shared controls update the displayed modelDrag to rotate · Pinch to zoom · Shared controls update the displayed model

INITIALIZING THREE.JS WEBGL SIMULATION...

Host-Model Telemetry/Computed Readout

Carrier-to-Station Production-Control Topology

Carrier Address

Source

58% normalized[1]

Cycle Phase

Source

COUPLED STATION OPERATIONsource topology[1]

Station Coupling

Source

CLOSEDclaim probe[1]

Machine Command

Source

AUTHORIZEDsource interlock[1]

Quantitative Performance

Source Refusal

REFUSEDmissing source inputs[1]

Carrier Address0.58 normalized

Mz Lift Pose0.44 normalized

My Platform Reach0.66 normalized

Marker Sensed1 off/on

Station Contacts Coupled1 off/on

Ordered Cycle0.56 normalized

Detailed Component Architecture

1Guideway, carriage, and horizontal servo Mx

An overhead or floor guide carries work from one selected station to another.

The source names track 21, carriage 22, wheels 24, a friction-drive wheel 25, and reversible motor Mx. The motion coordinate is represented as $x\in[0,1]$ because the grant specifies the topology but no physical rail length, velocity, acceleration, or motor torque.

19th-C. Term: guide meansModern: A guided transport axis or rail-based material-handling path

2Column, lift Mz, and platform reach My

The work carrier can lift and reach to preposition a workpiece at a machine.

Column 23, collar 38, worm 42, and Mz form a vertical axis; platform 35, rack 39', pinion 39, and My form a reach axis. The visual uses normalized $y$ and $z$ poses, preserving the claimed ordering of axes without asserting unprinted stroke lengths or loads.

19th-C. Term: prepositioningModern: Alignment of a part fixture relative to a process station

3Marker sensing and predetermining control

A position event advances the program from travel to the selected station sequence.

The source gives limit switches, pins, photoelectric sensing, and counters as alternatives. The relevant relation is logical, not dimensional: $markerMatched=1$ permits the selected station cycle. No claim here establishes encoder resolution, position error, or a feedback update rate.

19th-C. Term: predetermining controllerModern: Preset event counter or sequence controller

4Station securing and control coupling

A carrier is retained and its portable program connects to the fixed tool only after positioning.

The source names clamp or magnet devices and contact pairs 86 and 87. The live claim probe evaluates $ready=markerMatched\land locked\land coupled$ ; an uncoupled carrier never asserts a station command in the shared model.

19th-C. Term: coupling meansModern: Physical or electrical interface between a mobile fixture and a station controller

5Release and departure

A completed station sequence unlocks and sends the work carrier onward or bypasses a station.

Claims 7, 13, 14, 19, and 20 connect machine completion to release and renewed conveyance. The model visibly opens the lock before travel state resumes, but it does not simulate cutting forces, work quality, pneumatic pressure, or a machine process time that the grant never prints.

Engineering Principles & Equations

Governing Equations & Engineering Principles

Authored explanation paired with its stated mathematical relation

Marker, Retention, Coupling, and Release Interlock

Source-Bounded Industrial Automation

Mathematical Governing Law

\htmlClass{eq-term eq-term-marker_event eq-term-amber}{\htmlData{var=marker_event}{\textcolor{#f59e0b}{m_{recognized}}}}\land\textcolor{#16a34a}{r_{retained}}\land\htmlClass{eq-term eq-term-station_coupling eq-term-cyan}{\htmlData{var=station_coupling}{\textcolor{#0891b2}{c_{coupled}}}}\Rightarrow\htmlClass{eq-term eq-term-machine_command eq-term-amethyst}{\htmlData{var=machine_command}{\textcolor{#7c3aed}{u_{machine}}}};\quad\htmlClass{eq-term eq-term-release_stage eq-term-sapphire}{\htmlData{var=release_stage}{\textcolor{#2563eb}{p_{cycle}}}}\geq0.8\Rightarrow\textcolor{#dc2626}{u_{release}}

Terms:

Plain English DecoderHover or tap any highlighted phrase

A recognised station , retained carrier, and closed are the source-topology conditions that authorize the displayed . At the selected display , the sequence releases and departs rather than claiming a measured cycle time.

m_{recognized}

Recognised Station Marker

Claim-linked sensing event that begins the illustrated carrier-to-station sequence

off/on topology state[1]

The patent identifies markers, switches, scanners, and relay signals as selection and control events. It provides no sensor precision, latency, or event frequency for a numerical model.

Live Physical Value:

1.00 off/on topology state

Physical Principle & Engineering Insight

This is a modern boolean reading of the patent's sequence: sensing leads to positioning and retention, the portable controller couples to the station, then the station may operate; after the cycle, the carrier is released and moves on. The source does not supply an exact Boolean formula, a timing law, or the numbers needed for a performance simulation.

Historical Context: The issued claims make the carrier, record/controller, sensing event, retaining means, and selected production station legible as one physical control architecture rather than a free-floating automation slogan.

Serial kinematic coordinate decompositionAuthored Principle 1

Stated relation

$q=[x,y,z,\theta]$

The drawing separates guideway travel, vertical movement, platform reach, and rotation. The equation describes the arrangement of configuration coordinates only; the source does not provide the link lengths or inertial values needed to turn it into a physical robot dynamics calculation.

Discrete-event interlockAuthored Principle 2

Stated relation

$ready=markerMatched\land locked\land coupled$

A station command is permitted only after the selected station is detected, the carrier is retained, and the controller is coupled to the machine. This is a direct engineering reading of the marker, securing, and contact relationships in the grant, not a modern safety certification claim.

State-machine production sequenceAuthored Principle 3

Stated relation

$travel\rightarrow locate\rightarrow lock\rightarrow couple\rightarrow operate\rightarrow release\rightarrow travel$

The described Fig. 13 sequence issues Mx, My, Mz, clamp, coupling, and release commands in order. It makes the production mechanism teachable as a causal state transition rather than an animated conveyor decoration.

Interactive Schematic Sheet (Fig. 1)

Drawing sheet 1's plan view establishes the overhead guideway 21, the traveling carrier arrangement, and adjacent work stations.

1.00x

Click any numbered callout pin or use arrow keys [← / →]Tap any numbered pin4 Curated Callouts

Callout Pin Inspector

Select Any Numbered Pin

Click pins on the schematic or select from the list below to inspect historical specifications.

Why It Still Matters

The technical inheritance is the coupling of routing, fixture alignment, station authorization, and program selection. Modern flexible manufacturing systems distribute different work instructions to different parts and stations by electronic means, but this grant's contribution is much narrower and more mechanical: a carrier-bound record and controller, a sensed station, a physical machine interface, and an ordered release-and-transfer sequence. Claims 1, 7, 13, 19, and 20 make that combination readable without claiming that this document alone created later factory automation.

Legal Claims Decoder (21 Numbered Claims)

Compare dense legalistic claims directly with decoded plain-English functional specifications.

Claim #1Independent Master Claim

1/21

Verbatim Historical Legal Text

“An automatic production system comprising: (a) a plurality of machine tools defining respective work stations of a production line for performing different operations on work-in-process, (b) servo means for each of said tools operable to power said tools in performing various operations on work-in-process, (c) control means for each of said servo means for controlling the operation of said tools, (d) an automatic conveying system including a plurality of carriers for individual work pieces and guide means for guiding said carriers past said work stations, means for predeterminately positioning work on each of said carriers, (e) power means for moving said carriers along said guide means, (f) control means for said carrier power means, (g) said control means being operative for controlling transfer of individual carriers to selected tools, (h) power driven securing means at each work station operative for retaining carriers in predetermined alignment with each tool, (i) means for sensing the presence of a carrier at a work station, (j) said sensing means being operatively coupled to said control means and said carrier securing means for operating same to effect the prepositioning and retention of a carrier at a work station, and (k) a variable program control device having a record member containing a plurality of first recordings operative for stopping and positioning a carrier at selected work stations and second recordings operative to control the operation of selected machines in said system for performing predetermined operations on work held by said carriers, (l) means for reading said recordings, and (m) control means for said reading means operative in response to the activation of said sensing means for operating said reading means upon arrival of a carrier at each work station.”

Plain English Engineering Translation

Claim 1 protects a complete line in which individual work carriers travel past tools, sense a station, are power-secured in alignment, and read a carrier-held record that both stops the carrier and commands selected machines. It joins physical transport, retention, sensing, reading, and machine operation into one system claim.

Key Protected Innovations:

Carrier-held recordStation sensingPower-driven securing meansSelected-tool control

Historical Legal Impact:

This is the broadest issued combination of per-carrier program records with guided transfer, station sensing, retention, and machine control.

The Historical Bottleneck

The grant identifies a production-line problem that was costly in a machine-tool world: continuous conveyors and fixed transfer machinery repeated one machining set-up. Changing product shape, hole pattern, finish, inspection, or assembly could leave the line idle for reconfiguration. Lemelson's claimed answer was a carrier that brought its own program record to a selected, sensed, and mechanically coupled station.

Why Prior Art Failed

•US 2,139,403, cited in the specification, used helical screw drives to transfer work-holding fixtures between machine tools; Lemelson described such systems as relatively inflexible for changed operations.
•Continuous flight and belt conveyors moved assemblies between machines but did not by themselves supply the carrier-level record, station selection, securing, and coupling chain recited in the claims.
•A fixed single-operation transfer line could require a changed tool setup or rebuilding when a product revision altered operations, making downtime a stated economic constraint in the specification.

The Breakthrough Insight

“The inventive combination is not an unspecified automated factory. It is a distributed production-line interface: a guided carrier holds work and a record, sensing identifies a station, securing and prepositioning establish geometry, contacts or an optical link couple the record to a machine, and the same controller releases the carrier for the next operation.”

After the Grant

The grant expired after its statutory term. The museum record does not assert a patent war, a licensing result, or a measured industrial deployment because this primary source alone does not establish those claims.

Civilizational Impact

The document is useful historically because it makes flexible production concrete: position a particular part, authorize a particular station, provide that station's command sequence, then unlock and route onward. Its modern relevance is architectural rather than a claim of direct lineage or universal priority: it makes the mechanical interface between part routing and programmable machine control visible.

Further Context

The grant expressly reaches both an overhead monorail carrier and later flight-conveyor variants, showing that Lemelson treated the control and station-coupling relationship as more fundamental than one rail geometry.
Fig. 13 labels a tape or card reader as possible controller hardware, while Claims 8 and 9 describe optical and electrical-contact coupling alternatives.