US459715A - Leather-cutting machine - Google Patents

Leather-cutting machine Download PDF

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US459715A
US459715A US459715DA US459715A US 459715 A US459715 A US 459715A US 459715D A US459715D A US 459715DA US 459715 A US459715 A US 459715A
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plunger
leather
cutter
bed
machine
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/143—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2193—Guard mechanisms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/4604—Work feed functions as tool support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/872—With guard means
    • Y10T83/8722—Static
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8835—And means to move cooperating cutting member

Definitions

  • My invention consists of certain improvements in leather cutting and forming machines of the class wherein a vertically-reciprocating plunger bearin ga block or die moves downward upon a cutter or die mounted on the bed of the machine in such a manner as to cut a shoe-sole or similar article from leather placed above said cutter, or in the case of a forming-machine to form the soles placed between the dies.
  • the object of my improvements is to insure the safety of the operator by rendering it unnecessary to place his hand in the path of the'moving plunger in order to put in position or to remove the leather.
  • This I accomplish by having the bed of the machine bearing the cutter or lower die movable in a horizontal plane and actuated in such a manner that each time the plunger moves upward the bed moves forward into a convenient position for the operator to place the leather thereon, the bed drawing backward with the descent of the plunger so as to bring the cutter or lower die in the path of the plunger at the proper time for the cutting or forming to take place.
  • Figure 1 is a top plan View of a machine .embodying my improvements.
  • Fig. 2 is afront elevation, and
  • Fig. 3 is a side elevation thereof.
  • A is the base of the machine, from which arise the two plunger guiding-rods B B in front and the supports B 13' near the rear.
  • G is the plunger, which is adapted to move up and down easily between the guide-rodsB B.
  • the upper portions of the guide-rods are screw-threaded, as shown in Figs. 2 and 3, and the cross-piece O is bored out at either end to fit loosely over the rods B, being held thereon between the two nuts 0 C on each rod.
  • the cross-piece O is adjustable in height and may be securely clamped at any desired height on the rods.
  • F is a shaft mounted in bearings in the supports B B and having fixed thereon the pulley N, through which, by means of a belt, motion is transmitted to the machine.
  • F is a crank-disk, also fixed on said shaft to turn therewith, E being a connectingmod pivoted at e to the face of said crank-disk, and at e to the toggle-joint D D, the construction being such that as the shaft F revolves the plunger G moves up and down in a mannor readily apparent Without further description.
  • P is the movable bed provided along both sides with the tongues 19, which move in corresponding grooves in the guides R R, which guides are fixed to the base A.
  • T is a lever pivoted at t to one of the guides R.
  • L is an eccentric disk fixed on the shaft F, over which disk fits the inner enlarged end of the eccentric-rod L and the strap L in sucha manner as to give a reciprocating motion to the said rod L as the shaft F revolves.
  • lever L is a lever pivoted at Z to a connection Z on one of the guide-rods B.
  • One arm of the lever L is pivotally connected at Z with the outer front end of the eccentric-rod L, while the other arm is loosely connected, as at Z with the link-piece T, which is in turn loosely connected at t with the outer end of the lever T.
  • p and p are stops on the sliding bed P, with which the enlarged inner end of the lever T engages.
  • the reciprocating motion of the eccentric-rod L, acting through the pieces L and T causes the lever T to vibrate and engage first with one and then with the other of the stops 1719 with the result that the bed P moves intermittently forward and backward.
  • the block P which, as herein shown, bears the cutter P which is of proper shape to out the sole or other article from the leather.
  • On the front g is a block, fixed to the bottom of the plunger G in such a manner that it coacts with the cutter P when directly under the plunger to shear the sole or other article to be cut from the leather.
  • the whole construction and arrangement of parts is such that when the plunger G moves upward the movable bed R moves forward, bringing the cutter P some distance in front of the path of the plunger, the bed remaining stationary in this position long enough for the operator to place the leather upon it. Then during the descent of the plunger the bed moves quickly backward with the leather on the cutter until the said cutter is immediately under the plunger when the sole or other article is cut and the opera tion repeated. In this manner it is practically impossible for the operators hands to get between the cutter and the quickly-moving plunger, which is a common accident in machines having a stationary cutter always in the path of the plunger.
  • the machine with the guard H passing across the front thereof, being secured to the upright guide-rods B in front of the plunger.
  • the guard II may be carried down much lower than would be possible were the cutter stationary, so that the movable bed and the guard in front act together as safety devices in preventing accidental cutting or crushing of the hands of the operator.
  • the pressure of the block 9 on the cutter P may be adjusted to a nioety.
  • a pair of forming blocks or dies may be employed, one secured to theplunger and one on the movable bed P, fitting each other in such a manner as to form the soles between them.
  • O is a stop secured to the front of the base A in such a manner as to prevent 'the movable bed from passing too far forward.
  • a safety appliance consisting of the combination, with a vertically-reciprocating plunger provided with a block or forming-die, of a bed provided with a cutter or forming-block fixed thereon, said bed with its cutter or block being intermittentlymovable back and forth in a substantially horizontal plane, whereby on the upstroke of the plunger the bed moves the cutter or forming-block to some distance in front of the path of the plunger, and a protecting-guard practically covering the path of the plunger in front and occupying a position in a plane between the plunger and the cutter or block when said plunger is up, substantially as and for the purposes described.
  • avertically-reciprocatin g plunger Gr operated by suitable mechanism from a driving-shaft F, in combination with a suitably-guided movable bed P, provided with stops 1) 19 a reciprocating eccentric-rod L, driven by an eccentric mounted on said shaft, a lever L, pivoted to said eccentric-rod, a lever '1, engaging with said stops, and a link-piece 'l", loosely connecting said levers L andT,wherebyacontinuously-reciprocating motion of the plunger produces an intermittent motion of the bed in a plane at right angles to that of the plunger-path, substantially as and for the purposes described.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Description

(No Model.)
S. J. TALBOTT.
LEATHER CUTTING MACHINE... No. 459,715. Patented Sept. 15, 1891.
Mines-ses- 5. I Maw M Kmw UNITED STATES ATENT FFICE.
SYLVANUS J. TALBOTT, OF MILFORD, NElV HAMPSHIRE, ASSIGNOR TO MARTIN F. ELDREDGE, TRUSTEE, OF LYNN, MASSACHUSETTS.
LEATHER-CUTTING MACHINE.
SPECIFICATION forming part of Letters Patent No. 459,715, dated September 15, 1891.
Application filed May 4, 1891. Serial No. 391,703. (No model.)
' To all whom it may concern.-
Be it known that I, SYLvANUs J. TALBOTT, a citizen of the United States, residing at Milford, in the county of Hillsborough and State of New Hampshire, have invented certain new and useful Improvements in Leather Cutting and Forming Machines, of which the following is a full specification.
My invention consists of certain improvements in leather cutting and forming machines of the class wherein a vertically-reciprocating plunger bearin ga block or die moves downward upon a cutter or die mounted on the bed of the machine in such a manner as to cut a shoe-sole or similar article from leather placed above said cutter, or in the case of a forming-machine to form the soles placed between the dies.
The object of my improvements is to insure the safety of the operator by rendering it unnecessary to place his hand in the path of the'moving plunger in order to put in position or to remove the leather. This I accomplish by having the bed of the machine bearing the cutter or lower die movable in a horizontal plane and actuated in such a manner that each time the plunger moves upward the bed moves forward into a convenient position for the operator to place the leather thereon, the bed drawing backward with the descent of the plunger so as to bring the cutter or lower die in the path of the plunger at the proper time for the cutting or forming to take place. I moreover provide the :machine with a guard passing across the front thereof, which further prevents accident.
Referring to the accompanying drawings, Figure 1 is a top plan View of a machine .embodying my improvements. Fig. 2 is afront elevation, and Fig. 3 is a side elevation thereof.
A is the base of the machine, from which arise the two plunger guiding-rods B B in front and the supports B 13' near the rear.
G is the plunger, which is adapted to move up and down easily between the guide-rodsB B. The upper portions of the guide-rods are screw-threaded, as shown in Figs. 2 and 3, and the cross-piece O is bored out at either end to fit loosely over the rods B, being held thereon between the two nuts 0 C on each rod. In this manner the cross-piece O is adjustable in height and may be securely clamped at any desired height on the rods.
D and D are two bars pivoted together at 6. Of these the bar D is pivoted at cl to a connection (1 of the cross-bar O, and the bar D is pivoted at d to a connection 61 of the plunger G, the two bars D D forming virtually a toggle-joint.
F is a shaft mounted in bearings in the supports B B and having fixed thereon the pulley N, through which, by means of a belt, motion is transmitted to the machine.
F is a crank-disk, also fixed on said shaft to turn therewith, E being a connectingmod pivoted at e to the face of said crank-disk, and at e to the toggle-joint D D, the construction being such that as the shaft F revolves the plunger G moves up and down in a mannor readily apparent Without further description.
P is the movable bed provided along both sides with the tongues 19, which move in corresponding grooves in the guides R R, which guides are fixed to the base A.
T is a lever pivoted at t to one of the guides R.
L is an eccentric disk fixed on the shaft F, over which disk fits the inner enlarged end of the eccentric-rod L and the strap L in sucha manner as to give a reciprocating motion to the said rod L as the shaft F revolves.
L is a lever pivoted at Z to a connection Z on one of the guide-rods B. One arm of the lever L is pivotally connected at Z with the outer front end of the eccentric-rod L, while the other arm is loosely connected, as at Z with the link-piece T, which is in turn loosely connected at t with the outer end of the lever T.
p and p are stops on the sliding bed P, with which the enlarged inner end of the lever T engages. In this manner the reciprocating motion of the eccentric-rod L, acting through the pieces L and T, causes the lever T to vibrate and engage first with one and then with the other of the stops 1719 with the result that the bed P moves intermittently forward and backward. ofthe bed P is the block P, which, as herein shown, bears the cutter P which is of proper shape to out the sole or other article from the leather.
On the front g is a block, fixed to the bottom of the plunger G in such a manner that it coacts with the cutter P when directly under the plunger to shear the sole or other article to be cut from the leather.
The whole construction and arrangement of parts is such that when the plunger G moves upward the movable bed R moves forward, bringing the cutter P some distance in front of the path of the plunger, the bed remaining stationary in this position long enough for the operator to place the leather upon it. Then during the descent of the plunger the bed moves quickly backward with the leather on the cutter until the said cutter is immediately under the plunger when the sole or other article is cut and the opera tion repeated. In this manner it is practically impossible for the operators hands to get between the cutter and the quickly-moving plunger, which is a common accident in machines having a stationary cutter always in the path of the plunger.
To further prevent accident I provide the machine with the guard H passing across the front thereof, being secured to the upright guide-rods B in front of the plunger. By having the cutter carried on a movable bed in the manner just described, so that it is moved forward at the upstroke of the plunger into a convenient position for the leather to be placed thereon ,the guard II may be carried down much lower than would be possible were the cutter stationary, so that the movable bed and the guard in front act together as safety devices in preventing accidental cutting or crushing of the hands of the operator.
By raising and lowering the cross-piece G by means of the adjusting-nuts O C the pressure of the block 9 on the cutter P may be adjusted to a nioety.
Instead of the plain block g and the cutter P a pair of forming blocks or dies may be employed, one secured to theplunger and one on the movable bed P, fitting each other in such a manner as to form the soles between them.
O is a stop secured to the front of the base A in such a manner as to prevent 'the movable bed from passing too far forward.
I claim 1. In aleather cutting and forming machine, a safety appliance consisting of the combination, with a vertically-reciprocating plunger provided with a block or forming-die, of a bed provided with a cutter or forming-block fixed thereon, said bed with its cutter or block being intermittentlymovable back and forth in a substantially horizontal plane, whereby on the upstroke of the plunger the bed moves the cutter or forming-block to some distance in front of the path of the plunger, and a protecting-guard practically covering the path of the plunger in front and occupying a position in a plane between the plunger and the cutter or block when said plunger is up, substantially as and for the purposes described.
2. In a leather cutting and forming machine, avertically-reciprocatin g plunger Gr, operated by suitable mechanism from a driving-shaft F, in combination with a suitably-guided movable bed P, provided with stops 1) 19 a reciprocating eccentric-rod L, driven by an eccentric mounted on said shaft, a lever L, pivoted to said eccentric-rod, a lever '1, engaging with said stops, and a link-piece 'l", loosely connecting said levers L andT,wherebyacontinuously-reciprocating motion of the plunger produces an intermittent motion of the bed in a plane at right angles to that of the plunger-path, substantially as and for the purposes described.
In witness whereof I have hereunto set my hand.
SYLVANUS .l. TALBOTT.
Witnesses:
WM. 13. H. DowsE, ALBERT E. LEAoH.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916726A (en) * 1974-03-14 1975-11-04 Raymond L Springer Guard structure for a work table

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916726A (en) * 1974-03-14 1975-11-04 Raymond L Springer Guard structure for a work table

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