US1072963A - Machine for trimming last-heels. - Google Patents

Machine for trimming last-heels. Download PDF

Info

Publication number
US1072963A
US1072963A US71631412A US1912716314A US1072963A US 1072963 A US1072963 A US 1072963A US 71631412 A US71631412 A US 71631412A US 1912716314 A US1912716314 A US 1912716314A US 1072963 A US1072963 A US 1072963A
Authority
US
United States
Prior art keywords
last
jack
machine
cutter
trimming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US71631412A
Inventor
Henry F Loewer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US71631412A priority Critical patent/US1072963A/en
Application granted granted Critical
Publication of US1072963A publication Critical patent/US1072963A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27MWORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/20Manufacture or reconditioning of specific semi-finished or finished articles of lasts; of shoes, e.g. sabots; of parts of shoes, e.g. heels

Definitions

  • the present invention relates particularly to improvements in the machine disclosed in said patent, and one object of the invention is to'relieve theoperator of the labor of producing the tangential movements of the ack by which the point of operation is transferred from top to bottom of the last.
  • one object of the invention is to'relieve theoperator of the labor of producing the tangential movements of the ack by which the point of operation is transferred from top to bottom of the last.
  • I employ poweractuated mechanism by which the necessary movements are imparted to the jack, this mechanism acting, in the illustrated embodiment of the invention, to first raisethe jack and then arrest this movement and automatically return the jack to its original position. This cycle of operations is repeated automatically at each actuation of a treadle or other manuallyoperable device.
  • Another object of the invention is to provide for various adjustments of the machine by which it may be readily adapted for operation upon lasts of a great variety of sizes and shapes, and to this end I employ various features of construction and arrangeent of parts which will be hereinafter set forth in connection with the description of the illustrated embodiment of the invention.
  • FIG. 1 is a front-elevation of a machine embodying the present invention
  • Fig. 2 is a plan- .view of the machine of Fig. 1
  • Fig. 3 is a side-elevation of the upper portion of the machine, looking from leftto right'inFig. .l J i 1" V 1
  • Fig. 4- is a plan-view, ona larger scale, showing in detail a portion of the mechanism for operating the belt-shippers
  • Fig. 5 is a front-elevation, partly in section, of the parts shown in Fig. 1'
  • Fig. 6 is a vertical section through the jack by which the last is supported
  • Fig. 7 is a plan-view of the jack.
  • a rotary cutter 11 in the form of a saw of the wabble type, this saw being mounted on a shaft 12 journaled in bearings 13 on the frame of the machine.
  • the shaft and the saw are driven by pulleys and a belt 14 connecting them with a countershaft 15, which may be actuated from any suitable source of power.
  • the last-jack is carried by a table 16 at the front of the machine, and to this table are imparted the vertical movements by which'the jack and the last are moved tangentially with respect to the cutter. To this end the table is mounted upon two vertical slide-rods 17 and 18 which slide in bearings 19 on the frame of the machine.
  • the shaft 20 is provided, at its righthand end, with a gear 22, constituting one element of a train of speed-reducing gearing, which terminates in a pinion 24: on a counter-shaft 25.
  • the counter-shaft is journaled in the frame of the machine parallel with the shaft 20, and is provided with two loose pulleys 26 and27 between which is a fast pulley 28.
  • Two belts 29 and 30 connect the pulleys just mentioned with any suitable source of power, these belts moving constantly, and the belt 29 being crossed so as to move in the opposite direction from the belt 30.
  • Figs. 1 and 2 To control the positions of the belts 29 and 30 they are engaged, respectively, by forked shipper-levers 31 and 82, as shown particularly in Figs. 1 and 2. These shipper-levers are pivotally mounted upon a bar 33 forming a part of the frame of the machine. Above the shipper-levers a slideplate 35 is mounted to move horizontally through openings in upward projections 34 from the bar 33. This slide-plate is provided with a cam-slot comprising a straight central portion 36 and two inclined endpor tions 37 and 38.
  • the sliippeielevers are provided with rollers 89 and 4-0 which engage this canrslot, and in the interiiiediate position of the plate the rollers are at opposite ends of the straight portion 36, in which position the two belts are held upon the loose pulleys.
  • the belt 29 is brought into engagement with. the fast pulley 28, while in the opposite extreme position of the plate the belt is moved to the fast pulley, so that in these two extreme positions the mechanism may be actuated to raise and lower the table 16, respectively, while in the normal position of the machine the mechanism is inoperative, the two belts running freely on the loose pulleys.
  • the slide-plate 35 is actuated by means of a treadle 11 which is connected, by a link 42, with a bell-crank lever 43.
  • the lever L3 is pivoted on a stud 44 on the frame of the machine, and its upper end engages a pin 45 on the plate
  • a spring 46 tends to raise the. treadle, but the treadle normally occupies a neutral position midway between its uppermost and lowermost positions, being held at this point by means to be presently described.
  • ⁇ Vhen it is desired to throw the machine into operation the treadle is depressed to its lowermost position, as shown in Fig. 1, and the slideplate is thus .mo-ved to the left, causing the belt 29 to drive the fast pulley and the countershaft 25.
  • the table 16 is then raised until it reaches a predetermined position.
  • the slide-plate 35 is provided with an opening engaged by a stud t? which projects downwardly from the rear end of a lever -18, the lever being pivoted upon a bracket 49 forming part of the frame of the machine.
  • the forward end of the lever is connected, by a rod. 50, with an arm 51, and this arm is fixed on the upper end of a rock-shaft 52 journaled in the frame of the machine.
  • the rock-shaft carries a dog 53 which is adapted to co6perate with a latch 54.
  • This latch is carried by a spring-pressedslide moving in a recess in the frame of the inachine.
  • the dog normally occupies a position in the rear of the latch, but when the slide-plate 35 is moved to the left, as above described, the rock-shaft and the dog are rocked from left to right, thus causing the dog to engage the'beveled extremity of the latch and move past the same and into the position of Fig. t. If new the operator, after having depressed the treadle to produce. this movement, releases the treadle, the .dogis held, by the latch, against reverse "station,
  • a trip 56 is fixed to the slide-rod 17, this trip having; abeveled lug 57 which cooperates with a forwardprojection 58 on the latch 54.
  • the spring l6 now'acts to draw the treadle from its lowermost to plate 35 to .its farthest rightshand position.
  • the belt 29 is first moved from the fast pulley to the loose pulley 26, thusterminating the rising movement of the table, andthe shipper 29 its"? uppermost position,,thus moving the slide.
  • the jack by which the last is carried is shown particularly in Figs. 6 and 7. It comprises a slide 61, which has atthe bottom a dovetailed projection fitting a corresponding slot extending fore-and-aft in the upper surface of the table 16, so that the jack as a whole may slide toward or from the trimming-cutter.
  • the last is supported upon a bed 63 provided, near its rear end, with a heel-b1oclr 6-1 upon which the lieelportion of the last rests.
  • the toe of the last is engaged by a toe-gage 65.
  • This toegage is adjustable along the bed, having a downward extension which moves in a longitudinal slot in the bed and which is engaged by an adjusting's-crew 66 provided, at the front, with a handle 67 by means of which it may be rotated.
  • the toe-gage may be adjusted according to thelen'gth of the last upon which the machine is to operate.
  • the last is fixed in the jack by means of two heel-clamps 68 which engage the sides of the heel-portion of the last; These clamps are fixed on the upper ends of short rock-shafts 69 which are journaled in the bed 63.
  • the shafts 69 carry arms 70, of which the forward extremities engage beveled surfaces on a cam-plate 71.
  • This plate slides against the bottom of the bed, being guided and supported by two screws 72 passing through slots in the cam-plate.
  • the camplate is normally held in its rearmost position by means of two springs 74 connected with the cam-plate and with the bed, re spectively, and these springs, through the sliding movement imparted by them to the cam-plate, act to force the arms 70 outwardly and thus force the heel-clamps 68 toward each other and into forcible engagement with the last. 7
  • a hand-lever 75 is employed, this lever being pivoted, at one end, on the bracket 76 fixed to the bed 63.
  • This lever is slotted to engage a stud 77 projecting downwardly from the cam-plate.
  • the operator by drawing the hand-lever forward, causes the cam-plate to move correspondingly and to release the arms 70, and these arms are then drawn toward each other by a spring 7 3 which connects them, thus moving the clamps away from each other and permitting the removal of the last therefrom.
  • a novel feature of the present machine resides in an arrangement by which the angular position of the bed may be varied in the plane of rotationcf the trimmingcutter, to adapt the machine readily to lasts of different forms, and particularly to lasts in which the contour of the heel is more or less inclined.
  • the bed 63 is pivotally mounted at its rear end, having two arms 78 provided with hollowpivot-studs 7 9 loosely j ournaled in two brackets 80 fixed to the rear-end of the slide 61.
  • the bed may thus be swung about the axis of the stud 79, thus adjusting its inclination with respect to the slide 61.
  • a plate 81 is fixed to one of the studs just outside of the left-hand bracket 80, as shown particularly in FigsB and 6.
  • This plate is slotted to receive a screw'82 by means of which the plate maybe clamped firmly against the .outer surface of the bracket.
  • the screw 82 is provided with a handle by which it may be conveniently manipulated.
  • a rack 83 is pivoted at its upper end to a lug on the bed, and this rack is free to move vertically in an opening 84 in the forward end of the slide 61.
  • the forward surface of the rack engages a bearing-roller 85, while the teeth on the rear surface of the rack are engaged by a pinion 86.
  • This pinion is fixed on a shaft 87 journaled transversely on the slide 61, and a handle 88 is fixed to one end of the shaft, by which it may be conveniently rotated.
  • Another novel feature of the present invention resides in the means for locating the toe-gage and other parts of the ma chine in adjusting the machine to operate. upon a last of any given size or pattern.
  • I employ a device hereinafter described as a heel-gage, and con sisting of a rod 89 which may be introduced through the hollow centers of the studs 7 9, as shown in Figs. 6 and 7.
  • the rod 89 is recessed in such a'manner as to receive the lower corner or angle of the last, where the contour ofthe heel joins the contour of the 9 bottom, as shown in dotted lines in Fig. 6.
  • the rod 89 is introduced, being provided with a handle 90 by which it may be conveniently manipulated, and the last is then placed upon the bed and the' heel-block, with the angle above mentioned seated in the recess in the heel-gage.
  • toegage 65 may then be adjusted by means ofthe handle 67 and the screw 66 until it engages the forward extremity of the last, as shown in Fig. 1.
  • the heel-gage may then be withdrawn so as not to interfere with the normal operation of the machine, and the parts are thereafter in position to receive lasts similar to that for which they have been adjusted, it being necessary merely to open the heel-clamps, lay the last upon the bed and the heel-block, draw it forwardly into engagement with the toe gage, and then clamp the last by means of the heel-clamps 68.
  • the last will be brought accurately to the position in which the lower angle above referred to coincides with the pivotal axis about which the bed is adjusted, as above described.
  • Another novel device employed in the present machine comprises a bar 94 hereinafter referred to as the angle-gage.
  • bar is fixed in horizontal position on a slide 93 which slides vertically upon an upright rod 92 projecting from the right-hand bracket 80.
  • the anklegage is then applied to the rod 92 and the bed is swung upwardly, or downwardly, as
  • the ge may be freely raise-d or lowered by movement of the slide 93 and the upright 92, according to the height of the last.
  • the last will occupy a position in which the upper ex tremity of its heel-contour, terminating in v what may be called the ankle-portion of the last, lies directly above he lower extremity or angle of the heel-contour, as shown in Fig.
  • the hub 99 forms part of a segmental gear-wheel 102, which meshes with a rack 103 fixed to rise and fall with the tableltl;
  • an arm 10st fixed to the right-hand end of the hub 99, carries a spring-messed latch 105 which cooperates with one or another'of a series of notches 100 in the edge of the guide-wheel, so that the wheel is caused to perform partial rota tions together with the hub andthe segmental gear as the table rises and falls.
  • the object-of the latch just described is to permit different portions of the guidewheel to cooperate with the pattern-plate, V
  • the general operation of the machine is as follows: The operator pulls the hand lever 75 forwardly, thus at the same time openmg the heel-clamps and movlng the slice 61 forwardly upon the table. He then places the last upon the bed and moves it forwardly until, the toe of the last is in engagement with the'toegage. l The operator then presses the hand-lever rearwardly, thus causing the last to be clamped upon the jack,
  • the hand-lever 7 5 for opening and closing the heel-clamps simplifies and facilitates the operation of the machine, since the movements of this lever, as just described, are in such directions as to perform the addi tional function of moving the slide and the jack toward and from the trimming-cutter, and by this arrangement, in connection with the automatic power-actuated mechanism for raising and lowering the jack, the machine is render'ed very easy and rapid in operation and capable of being operated by unskilled labor.
  • A. machine for trimming last-heels having, .in combination, a rotary trimming-cutter, a jack for holding a last with its heel in engagement with the trimming-cutter, and means for moving the jack in a general direction tangential to the cutter,said means comprising a slide on which the jack is mounted, reversible gearing for actuating the slide in opposite directions, a manuallyoperable member for throwing the gearing into one operative position to move the slide in one direction, a detent for holding the gearing in said position, a trip carried by the slide and adapted to engage the detent and release the gearing from said position when the slide has completed its movement in said direction, resilient means for moving the gearing, when so released, to its opposite operative position, to impart a return movement to the slide, and means, actuated by the slide at the end of such return'movement, to restore the gearing to neutral inoperative position. 7 i
  • a machine for trimming lastheels having, in combination, a rotary trimming-cutter, a jack for holding a last with its heel in engagement with the trimming-cutter, the jack comprising means for clamping the last laterally in place therein and being movable toward and from the cutter, means for positively arresting the movement of the jack toward the cutter, a manually-operable member connected with said clampingmeans and operable, when moved in one direction, to cause the clamping-means to engage and clamp the last and the jack to move toward the cutter; and when moved in the opposite direction, to cause the jack to move away from the cutter and the clamping-means to release the last, and means for imparting a feeding movement to the jack in a general direction tangential to the cutter.
  • a machine for trimming last-heels having, in combination, a rotary trimming-cutter, a jack for holding a last with its heel in engagement with the trimming cutter, means for supporting the jack and for moving it in a general direction tangential with respect to the cutter, the jack being adjustable upon said means to vary the inclination at which the last is held in the plane of rotation of the cutter, and means for fixing the jack in adjustable position on said means.
  • a machine for trimming last-heels having, in combination, a rotary trimming-cutter, a jack for holding a last with its heel in engagement with the trimming-cutter, the ack being movable toward the cutter to bring the last into operative engagement therewith, and a heel-gage adapted to be engaged by the lower angle of the heel of the last in locating the last in the jack, the heel-gage being mounted movably upon the jack so that it may be removed, after use, from the path of operation of the cutter.
  • a machine for trimming last-heels having, in combination, a rotary trimmingcutter, a jack for holding a last with its heel in engagement with the trimming-cutter, the jack being movable toward the cutter to bring the last into operative engagement therewith and being also adjustable to vary the inclination of the last in the plane of rotation of the cutter, and a gage adapted to register with the upper angle of the rear extremity of the last to assist in adjusting the angular position thereof, said gage being movably mounted upon the jack so that it may be removed, after use, from the path of operation of the cutter.
  • a machine. for trimming last heels having, in combination, a rotary trimmingcutter, a jack for holding a last with its heel in engagement with the trimming-cutter, the jack being movable toward the cutter to bring the last into operative engage ment therewith, and being also adjustable to vary the inclination of the last in the plane of rotation of the cutter, and two gages adapted to register with the upper and lower angles of the rear extremity of the last, respectively, to assist in adjusting the position thereof, said gages being movably mounted upon the jack so that they may be removed, after use, from the path of operation of the cutter.
  • a machine for trimming last heels having, in combination, a rotary trimmingcutter, a jack for holding a last with its heel in engagement with the trimming-cutter, the jack being movable toward the cutter to bring the last into operative engagement therewith, and being also adjustable to vary the inclination of the last in the plane of rotation of the cutter, two gages adapted to register with the upper and lower angles of the rear extremity of the last, respectively, to assist in adjusting the position thereof, said gages being movably mounted upon the jack so that they may be removed, after use,
  • a pattern-plate adjustably mounted on the jack and adapted to engage said gages to determine its operative position on the jack
  • a machine for trimming last-heels having, in combination, a trimming-cutter rotative about a horizontal axis, a horizontal table movable vertically in front. of the trimming-cutter, mechanism for imparting alternate rising and falling movements to said table, and a last'supporting jack comprising a slide carried by the table and movable toward and from the cutter, a bed carried by the slide and pivotally connected therewith at its rear end, said bed being angularly adjustable about its pivotal connection in the plane of rotation of the cut-c ter, and means the bed.
  • a machine for trimming last-heels having, in combination, a rotary trimmingcutter, a jack for holding a last with its heel in engagement with the cutter, the jack comprising clampingj aws mounted pivotally in position to swing against the sides of the last, a cam-plate 'slidable upon the jack, a hand-lever pivoted upon the jack for clamping a last upon and adapted to swing thereon toward and havin from the cutter, the hand-lever being opera: tively connected with the cam-plate, and lever-arms connected with the clamping-jaws and engaging the cam-plate, whereby the jawsare caused to engage'and clamp the last when the hand-leveris moved toward the trimming cutter.
  • a machine for trimming last-heels having in combination, a trimming-cutter,
  • a jack for holding a last with its heel in engagement wlth the trimming-cutter, a pat tern-plate adjustably mounted on the jack, means cooperating with the pattern-plate to regulate the operative position'of the'jaclr during the trimming operation, and a gage mounted on the jack and adapted to engage simultaneously corresponding parts of the last and the pattern-plateto assist in 'ad-' justing the plate.
  • a machine having, in combination, a trimmingrcutter, a jack for holding a last with its heel in engagement withthe trimming-cutter, the
  • jack being pivotally mounted so that it may be angularly adJuSted about an axis adjacent the point of operation ofthe cutter
  • a heel-gage adapted to engage the lower 7 angle of the heel of a last and locate itsubstantially at the pivotal axis of the jack.
  • a jack mounted to slide toward and from' the trimming-cutter and provided with clamps adapted to swing laterally into engagement with a last on the jack, mechanism for actuating said clamps, saidmechanism tending normally to move the clamps to operative position, and a manually operable member mounted on the jack and adapted to move the jack toward and from the trimming-cutter, the manually-operable member being movable relatively to the jack and being connected with said mechanism so as to cause the clamps to be moved away from the last when the manually-operative HENRY F. Lonwna.

Description

H. F. LOEWER. MACHINE FOR TRIMMING LAST HEELS.
APPLICATION FILED AUG. 21', 1912-.
1,072,963, Patented Sept, 9, 1913.
3 SHEETS-SHEET l.
1M f W W y H. F. LOEWER. MACHINE FOR TRIMMING LAST HEELS. APPLICATION FILED AUG. 21, 1912.
1,072,963. Patented Sept. 9, 1913.
3 SHEETS-SHEET 2.
' 'dms mw e 3 I LM COLUMBIA PLANOORAPM $0.. WASHINGTON. u. c.
- H. F. LOEWBR. MACHINE POE TRIMMING LAST HEELS. APPLICATION FILED AUG. 21, 1912.
1,072,963. Patented Sept. 9, 1913.-
3 SHEETS-SHEET 3.
g W g I 9 .1mm
Mama A, W
UNITED sr Tns HENRY F. LOEWER, OF ROCHESTER, NEW YORK.-
M CHINE nor. TRIMMING LAST-HEELS.
Specification of Letters Patent.
Patented Sept. c, 1913.
Application filed August 21, 1912. Serial No. 716,314.
Toall whom, it may concern:
Be it known that I, HENRY F. Lonwnn,
. a citizen of the United States, and resident March 30, 1909, I have described a machine of the kind in question in which the last is held in operative relation with a rotary trimming-cutter by means of a last-support or ack, the ack having certain movements imparted to it manuallyby which the last is moved relatively to the cutter 1n such a manner as to cause the cutter to trim the contour of the last-heel from top to bottom,
and to produce a predetermined outline.
The present invention relates particularly to improvements in the machine disclosed in said patent, and one object of the invention is to'relieve theoperator of the labor of producing the tangential movements of the ack by which the point of operation is transferred from top to bottom of the last. To this end I employ poweractuated mechanism by which the necessary movements are imparted to the jack, this mechanism acting, in the illustrated embodiment of the invention, to first raisethe jack and then arrest this movement and automatically return the jack to its original position. This cycle of operations is repeated automatically at each actuation of a treadle or other manuallyoperable device.
Another object of the invention is to provide for various adjustments of the machine by which it may be readily adapted for operation upon lasts of a great variety of sizes and shapes, and to this end I employ various features of construction and arrangeent of parts which will be hereinafter set forth in connection with the description of the illustrated embodiment of the invention.
In the accompanying drawings :-Figure 1 is a front-elevation of a machine embodying the present invention; Fig. 2 is a plan- .view of the machine of Fig. 1; Fig. 3 is a side-elevation of the upper portion of the machine, looking from leftto right'inFig. .l J i 1" V 1; Fig. 4- is a plan-view, ona larger scale, showing in detail a portion of the mechanism for operating the belt-shippers; Fig. 5 is a front-elevation, partly in section, of the parts shown in Fig. 1'; Fig. 6 is a vertical section through the jack by which the last is supported; and Fig. 7 is a plan-view of the jack. A
In the illustrated embodiment of the invention I employ, as in the machine of said patent, a rotary cutter 11 in the form of a saw of the wabble type, this saw being mounted on a shaft 12 journaled in bearings 13 on the frame of the machine. The shaft and the saw are driven by pulleys and a belt 14 connecting them with a countershaft 15, which may be actuated from any suitable source of power. The last-jack is carried by a table 16 at the front of the machine, and to this table are imparted the vertical movements by which'the jack and the last are moved tangentially with respect to the cutter. To this end the table is mounted upon two vertical slide- rods 17 and 18 which slide in bearings 19 on the frame of the machine. A shaft 20, journaled upon the frame of the machine, is provided with two pinions 21 which mesh with rack-teeth cut in the back of the sliderods 17 and18 (see Figs. 1 and 3), so that by rotation of the shaft 20 in opposite directions the table may be raised and lowered.
The shaft 20 is provided, at its righthand end, with a gear 22, constituting one element of a train of speed-reducing gearing, which terminates in a pinion 24: on a counter-shaft 25. The counter-shaft is journaled in the frame of the machine parallel with the shaft 20, and is provided with two loose pulleys 26 and27 between which is a fast pulley 28. Two belts 29 and 30 connect the pulleys just mentioned with any suitable source of power, these belts moving constantly, and the belt 29 being crossed so as to move in the opposite direction from the belt 30. By this arrangement the fast pulley 28 and the shaft 25, and other parts connected therewith, may be driven in either direction, or the two jbelts may run freely on the loose pulleys 26 and 27 without actuating the table-mechanism in either direction.
To control the positions of the belts 29 and 30 they are engaged, respectively, by forked shipper- levers 31 and 82, as shown particularly in Figs. 1 and 2. These shipper-levers are pivotally mounted upon a bar 33 forming a part of the frame of the machine. Above the shipper-levers a slideplate 35 is mounted to move horizontally through openings in upward projections 34 from the bar 33. This slide-plate is provided with a cam-slot comprising a straight central portion 36 and two inclined endpor tions 37 and 38. The sliippeielevers are provided with rollers 89 and 4-0 which engage this canrslot, and in the interiiiediate position of the plate the rollers are at opposite ends of the straight portion 36, in which position the two belts are held upon the loose pulleys. When the plate is moved to its extreme left-hand position, as in Fig. 2, the belt 29 is brought into engagement with. the fast pulley 28, while in the opposite extreme position of the plate the belt is moved to the fast pulley, so that in these two extreme positions the mechanism may be actuated to raise and lower the table 16, respectively, while in the normal position of the machine the mechanism is inoperative, the two belts running freely on the loose pulleys.
, The slide-plate 35 is actuated by means of a treadle 11 which is connected, by a link 42, with a bell-crank lever 43. The lever L3 is pivoted on a stud 44 on the frame of the machine, and its upper end engages a pin 45 on the plate A spring 46 tends to raise the. treadle, but the treadle normally occupies a neutral position midway between its uppermost and lowermost positions, being held at this point by means to be presently described. \Vhen it is desired to throw the machine into operation the treadle is depressed to its lowermost position, as shown in Fig. 1, and the slideplate is thus .mo-ved to the left, causing the belt 29 to drive the fast pulley and the countershaft 25. Through the gear-mechanism previously described the table 16 is then raised until it reaches a predetermined position.
To reverse the operation of the table mechanism at the upper end of its move ment, I employ mechanism shown particu larly in Figs. 2, 4 and 5. The slide-plate 35 is provided with an opening engaged by a stud t? which projects downwardly from the rear end of a lever -18, the lever being pivoted upon a bracket 49 forming part of the frame of the machine. The forward end of the lever is connected, by a rod. 50, with an arm 51, and this arm is fixed on the upper end of a rock-shaft 52 journaled in the frame of the machine. Near its upper end the rock-shaft carries a dog 53 which is adapted to co6perate with a latch 54. This latch is carried by a spring-pressedslide moving in a recess in the frame of the inachine. The dog normally occupies a position in the rear of the latch, but when the slide-plate 35 is moved to the left, as above described, the rock-shaft and the dog are rocked from left to right, thus causing the dog to engage the'beveled extremity of the latch and move past the same and into the position of Fig. t. If new the operator, after having depressed the treadle to produce. this movement, releases the treadle, the .dogis held, by the latch, against reverse "station,
and thus the slide-plate, the belt-shippers and the treadle-mechanism are all held against return movement, so that the rising movement of the table-mechanism continues automatically. To release the dog 53 at the proper iovement and permit the rising movement of j the table to terminate, a trip 56 is fixed to the slide-rod 17, this trip having; abeveled lug 57 which cooperates with a forwardprojection 58 on the latch 54. When the table: has risen to the position of'Fig. 1 the bev-' eled surface ofjthe lug 57 forces the-projection 58 and the latch to the right thusi'eleasing the dog 53 and permitting the rockshaft 52 to rotate. The spring l6 now'acts to draw the treadle from its lowermost to plate 35 to .its farthest rightshand position. In the course of this movement the belt 29 is first moved from the fast pulley to the loose pulley 26, thusterminating the rising movement of the table, andthe shipper 29 its"? uppermost position,,thus moving the slide.
then shifts the belt 30 from the loose pulley 27 to the fast pulley 28, thus rotating the gearing in the opposite direction and cansing the table to move downwardly again.
that when the table reaches its predetermined lowermost or normal position the roller engages the cam and thus rotates the rock-shaft back to its normal position, thus moving the slide-plate 35 to neutral position, in which both of the beltsare' running upon the loose pulleys, and depressing the treadle from itsuppermostposition to its normal, central position. The parts are then held in this position, against the opposition of the spring 4.6,by the action of thecam' 59 V and the roller 60 until the treadle is again depressed to repeat the cycle of operationsjustdescribed. 7 r
The jack by which the last is carried is shown particularly in Figs. 6 and 7. It comprises a slide 61, which has atthe bottom a dovetailed projection fitting a corresponding slot extending fore-and-aft in the upper surface of the table 16, so that the jack as a whole may slide toward or from the trimming-cutter. The last is supported upon a bed 63 provided, near its rear end, with a heel-b1oclr 6-1 upon which the lieelportion of the last rests. The toe of the last is engaged by a toe-gage 65. This toegage is adjustable along the bed, having a downward extension which moves in a longitudinal slot in the bed and which is engaged by an adjusting's-crew 66 provided, at the front, with a handle 67 by means of which it may be rotated. By this arrangement the toe-gage may be adjusted according to thelen'gth of the last upon which the machine is to operate. As in the machine of said patent, the last is fixed in the jack by means of two heel-clamps 68 which engage the sides of the heel-portion of the last; These clamps are fixed on the upper ends of short rock-shafts 69 which are journaled in the bed 63. At their lower ends the shafts 69 carry arms 70, of which the forward extremities engage beveled surfaces on a cam-plate 71. This plate slides against the bottom of the bed, being guided and supported by two screws 72 passing through slots in the cam-plate. The camplate is normally held in its rearmost position by means of two springs 74 connected with the cam-plate and with the bed, re spectively, and these springs, through the sliding movement imparted by them to the cam-plate, act to force the arms 70 outwardly and thus force the heel-clamps 68 toward each other and into forcible engagement with the last. 7
To release the last from the action of the heel-clamps a hand-lever 75 is employed, this lever being pivoted, at one end, on the bracket 76 fixed to the bed 63. This lever is slotted to engage a stud 77 projecting downwardly from the cam-plate. The operator, by drawing the hand-lever forward, causes the cam-plate to move correspondingly and to release the arms 70, and these arms are then drawn toward each other by a spring 7 3 which connects them, thus moving the clamps away from each other and permitting the removal of the last therefrom.
A novel feature of the present machine resides in an arrangement by which the angular position of the bed may be varied in the plane of rotationcf the trimmingcutter, to adapt the machine readily to lasts of different forms, and particularly to lasts in which the contour of the heel is more or less inclined. To this end the bed 63 is pivotally mounted at its rear end, having two arms 78 provided with hollowpivot-studs 7 9 loosely j ournaled in two brackets 80 fixed to the rear-end of the slide 61. The bed may thus be swung about the axis of the stud 79, thus adjusting its inclination with respect to the slide 61. To fix the bed in its adjusted, angular position a plate 81 is fixed to one of the studs just outside of the left-hand bracket 80, as shown particularly in FigsB and 6. This plate is slotted to receive a screw'82 by means of which the plate maybe clamped firmly against the .outer surface of the bracket. The screw 82 is provided with a handle by which it may be conveniently manipulated. For convenience in raising and lowering the forward end of the bed, in making the angular adjustment just described, a rack 83 is pivoted at its upper end to a lug on the bed, and this rack is free to move vertically in an opening 84 in the forward end of the slide 61. The forward surface of the rack engages a bearing-roller 85, while the teeth on the rear surface of the rack are engaged by a pinion 86. This pinion is fixed on a shaft 87 journaled transversely on the slide 61, and a handle 88 is fixed to one end of the shaft, by which it may be conveniently rotated.
Another novel feature of the present invention resides in the means for locating the toe-gage and other parts of the ma chine in adjusting the machine to operate. upon a last of any given size or pattern. For this purpose I employ a device hereinafter described as a heel-gage, and con sisting of a rod 89 which may be introduced through the hollow centers of the studs 7 9, as shown in Figs. 6 and 7. The rod 89 is recessed in such a'manner as to receive the lower corner or angle of the last, where the contour ofthe heel joins the contour of the 9 bottom, as shown in dotted lines in Fig. 6.
In adjusting the machine, therefore, for any given last the rod 89 is introduced, being provided with a handle 90 by which it may be conveniently manipulated, and the last is then placed upon the bed and the' heel-block, with the angle above mentioned seated in the recess in the heel-gage. The
toegage 65 may then be adjusted by means ofthe handle 67 and the screw 66 until it engages the forward extremity of the last, as shown in Fig. 1. The heel-gage may then be withdrawn so as not to interfere with the normal operation of the machine, and the parts are thereafter in position to receive lasts similar to that for which they have been adjusted, it being necessary merely to open the heel-clamps, lay the last upon the bed and the heel-block, draw it forwardly into engagement with the toe gage, and then clamp the last by means of the heel-clamps 68. By these operations the last will be brought accurately to the position in which the lower angle above referred to coincides with the pivotal axis about which the bed is adjusted, as above described.
Another novel device employed in the present machine comprises a bar 94 hereinafter referred to as the angle-gage. bar is fixed in horizontal position on a slide 93 which slides vertically upon an upright rod 92 projecting from the right-hand bracket 80. In setting up the machine for any size orform of lastIt-he last is put into This v position by means of the heel-gage and the toe-gage as before described. The anklegage is then applied to the rod 92 and the bed is swung upwardly, or downwardly, as
may be necessary, until the upper angle of the last, that is, the point where the heel oins the upper surface of the last, engages the lower front angle or edge of the anglegage 94, as shown in dotted lines in i' ight In performing this adjustmentthe ge may be freely raise-d or lowered by movement of the slide 93 and the upright 92, according to the height of the last. When the bed has been adjusted as just described the last will occupy a position in which the upper ex tremity of its heel-contour, terminating in v what may be called the ankle-portion of the last, lies directly above he lower extremity or angle of the heel-contour, as shown in Fig. 6, this being 'the position in which the guiding-meclninisin of the machine is adapted to operate correctly to produce the required contom: in the heel, and by adjusting the inclination of the bed in this manner the machine may be adapted to produce similar contours upon the hcelsportions of lasts in which the generalinclination of the heel-contcnr 113213 11111 according to the style of last, and this may be done by the use of a single patterndate and guidewheel for all of such diiii'erent styles.
In the machine of said patent I employed airacljustable pattern-plate and a guidewh e1, which cooperated to control the forward and rearward horizontal movements of the last-jack during the general tangential movement of the jack with respect to the trimming-cuttcr, whereby the desired contour was prodncednpon the ieel of the last; In the present machine I employsimilar elements cooperating in substantially the same manner. The pattern-plate is clamped upon the outer su cc of the plate 81, being fixed in place by means of a clampingplate 90 and a screw 07 provided with a handle by which it may be conveniently mani ulated. This pattern-plate is conveniently adjusted by the use of the heel-gage loosely journaled on a stud 100. This stud is fixed in an upright member 101 upon the frame of the machine, as shown particularly in Figs. 1 and 2.
As the pattern-plate is intended to 00- operate with certain specific portions of the periphery of the guide-wheel, means are provided for rotating the latter through a predetermined angle during the rising and falling movement of the lastrjack and the pattern-plate; To this end the hub 99 forms part of a segmental gear-wheel 102, which meshes with a rack 103 fixed to rise and fall with the tableltl; ,An arm 10st, fixed to the right-hand end of the hub 99, carries a spring-messed latch 105 which cooperates with one or another'of a series of notches 100 in the edge of the guide-wheel, so that the wheel is caused to perform partial rota tions together with the hub andthe segmental gear as the table rises and falls.
The object-of the latch just described is to permit different portions of the guidewheel to cooperate with the pattern-plate, V
in the same manner and for the same pur pose as in the machine described in sa'idpat ent. The different segments 107, 108, 109,"
etc, while conforming approximately to the circular general form of the wheel, are curved upondiiferent radii, with tlieresult that, while cooperating with the same patternplate, these different segments willprodnce heel-contours on the last of dill'erent degrees of convexity, and in this manner the machine is adapted to operate upon lasts of similar pattern but different sizes without any adjustment of the .machine other than thenecessarychange from one segment to another of the guide-wheel, and the corresponding adjustment of the'toe-ga-ge according to the lengths of the diiferent sizes. The general operation of the machine is as follows: The operator pulls the hand lever 75 forwardly, thus at the same time openmg the heel-clamps and movlng the slice 61 forwardly upon the table. He then places the last upon the bed and moves it forwardly until, the toe of the last is in engagement with the'toegage. l The operator then presses the hand-lever rearwardly, thus causing the last to be clamped upon the jack,
and at the same time forcing the slide rearwardly so as to bring the last into engage= ment with the trimming-cutter. At this time the table is in its lowermost position, so that the cutter begins its o'peration'at the ankle-portion of thelast. The operator then depresses the treadle for a moment, whereupon the table begins torise through the operation of the belt-shippers, as above described, and during this rising movement the heel of the last is trimmed from top to bot tom. When the table and the jack reach their uppermost position the risingmove ment automatically interrupted, as before described, and the table and jack then fall again to their normal lowermost position. The operator then pulls the hand-lever 75 forwardly again, thus releasing the last softhat of the periphery of the guide-wheel,
it may be removed from the jack and a fresh last substituted. The use of the hand-lever 7 5 for opening and closing the heel-clamps simplifies and facilitates the operation of the machine, since the movements of this lever, as just described, are in such directions as to perform the addi tional function of moving the slide and the jack toward and from the trimming-cutter, and by this arrangement, in connection with the automatic power-actuated mechanism for raising and lowering the jack, the machine is render'ed very easy and rapid in operation and capable of being operated by unskilled labor.
My invention is not limited to the embodiment thereof hereinbefore described and illustrated in the accompanying drawings, but may be embodied in various other forms within the nature of the invention as it is defined in the following claims.
I claim j I i 1. A. machine for trimming last-heels having, .in combination, a rotary trimming-cutter, a jack for holding a last with its heel in engagement with the trimming-cutter, and means for moving the jack in a general direction tangential to the cutter,said means comprising a slide on which the jack is mounted, reversible gearing for actuating the slide in opposite directions, a manuallyoperable member for throwing the gearing into one operative position to move the slide in one direction, a detent for holding the gearing in said position, a trip carried by the slide and adapted to engage the detent and release the gearing from said position when the slide has completed its movement in said direction, resilient means for moving the gearing, when so released, to its opposite operative position, to impart a return movement to the slide, and means, actuated by the slide at the end of such return'movement, to restore the gearing to neutral inoperative position. 7 i
2. A machine for trimming lastheels having, in combination, a rotary trimming-cutter, a jack for holding a last with its heel in engagement with the trimming-cutter, the jack comprising means for clamping the last laterally in place therein and being movable toward and from the cutter, means for positively arresting the movement of the jack toward the cutter, a manually-operable member connected with said clampingmeans and operable, when moved in one direction, to cause the clamping-means to engage and clamp the last and the jack to move toward the cutter; and when moved in the opposite direction, to cause the jack to move away from the cutter and the clamping-means to release the last, and means for imparting a feeding movement to the jack in a general direction tangential to the cutter.
engaging the last laterally to clamp it in place therein and being movable as a whole toward and from the cutter, means for pos1- tively arresting the movement of the jack toward the trimming-cutter, a hand-lever pivoted on the jack and movable thereon toward and from the cutter, and connections between the hand-lever and the clamping means for causing the latter to close laterally upon the last when the hand-lever is pushed toward the cutter.
4. A machine for trimming last-heels having, in combination, a rotary trimming-cutter, a jack for holding a last with its heel in engagement with the trimming cutter, means for supporting the jack and for moving it in a general direction tangential with respect to the cutter, the jack being adjustable upon said means to vary the inclination at which the last is held in the plane of rotation of the cutter, and means for fixing the jack in adjustable position on said means.
A machine for trimming last-heels having, in combination, a rotary trimming-cutter, a jack for holding a last with its heel in engagement with the trimming-cutter, the ack being movable toward the cutter to bring the last into operative engagement therewith, and a heel-gage adapted to be engaged by the lower angle of the heel of the last in locating the last in the jack, the heel-gage being mounted movably upon the jack so that it may be removed, after use, from the path of operation of the cutter.
6. A machine for trimming last-heels having, in combination, a rotary trimmingcutter, a jack for holding a last with its heel in engagement with the trimming-cutter, the jack being movable toward the cutter to bring the last into operative engagement therewith and being also adjustable to vary the inclination of the last in the plane of rotation of the cutter, and a gage adapted to register with the upper angle of the rear extremity of the last to assist in adjusting the angular position thereof, said gage being movably mounted upon the jack so that it may be removed, after use, from the path of operation of the cutter.
7 A machine. for trimming last heels having, in combination, a rotary trimmingcutter, a jack for holding a last with its heel in engagement with the trimming-cutter, the jack being movable toward the cutter to bring the last into operative engage ment therewith, and being also adjustable to vary the inclination of the last in the plane of rotation of the cutter, and two gages adapted to register with the upper and lower angles of the rear extremity of the last, respectively, to assist in adjusting the position thereof, said gages being movably mounted upon the jack so that they may be removed, after use, from the path of operation of the cutter.
8., A machine for trimming last heels having, in combination, a rotary trimmingcutter, a jack for holding a last with its heel in engagement with the trimming-cutter, the jack being movable toward the cutter to bring the last into operative engagement therewith, and being also adjustable to vary the inclination of the last in the plane of rotation of the cutter, two gages adapted to register with the upper and lower angles of the rear extremity of the last, respectively, to assist in adjusting the position thereof, said gages being movably mounted upon the jack so that they may be removed, after use,
from the path of operation of the cutter, a pattern-plate adjustably mounted on the jack and adapted to engage said gages to determine its operative position on the jack,
and means cooperating with the patternplate to regulate the operative position of the ack during the trimming operation.
9. A machine for trimming last-heels having, in combination, a trimming-cutter rotative about a horizontal axis, a horizontal table movable vertically in front. of the trimming-cutter, mechanism for imparting alternate rising and falling movements to said table, and a last'supporting jack comprising a slide carried by the table and movable toward and from the cutter, a bed carried by the slide and pivotally connected therewith at its rear end, said bed being angularly adjustable about its pivotal connection in the plane of rotation of the cut-c ter, and means the bed.
10. A machine for trimming last-heels having, in combination, a rotary trimmingcutter, a jack for holding a last with its heel in engagement with the cutter, the jack comprising clampingj aws mounted pivotally in position to swing against the sides of the last, a cam-plate 'slidable upon the jack, a hand-lever pivoted upon the jack for clamping a last upon and adapted to swing thereon toward and havin from the cutter, the hand-lever being opera: tively connected with the cam-plate, and lever-arms connected with the clamping-jaws and engaging the cam-plate, whereby the jawsare caused to engage'and clamp the last when the hand-leveris moved toward the trimming cutter. i
11. A machine for trimming last-heels having in combination, a trimming-cutter,
a jack for holding a last with its heel in engagement wlth the trimming-cutter, a pat tern-plate adjustably mounted on the jack, means cooperating with the pattern-plate to regulate the operative position'of the'jaclr during the trimming operation, and a gage mounted on the jack and adapted to engage simultaneously corresponding parts of the last and the pattern-plateto assist in 'ad-' justing the plate. i
12. A machine having, in combination, a trimmingrcutter, a jack for holding a last with its heel in engagement withthe trimming-cutter, the
jack being pivotally mounted so that it may be angularly adJuSted about an axis adjacent the point of operation ofthe cutter,
for trimming last heels and a heel-gage adapted to engage the lower 7 angle of the heel of a last and locate itsubstantially at the pivotal axis of the jack.
13. A machine for, trimming last} heels in combination, a trimming-cutter,
a jack mounted to slide toward and from' the trimming-cutter and provided with clamps adapted to swing laterally into engagement with a last on the jack, mechanism for actuating said clamps, saidmechanism tending normally to move the clamps to operative position, and a manually operable member mounted on the jack and adapted to move the jack toward and from the trimming-cutter, the manually-operable member being movable relatively to the jack and being connected with said mechanism so as to cause the clamps to be moved away from the last when the manually-operative HENRY F. Lonwna.
jack away Witnesses C. S. DAVIS, D. G RN E.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.
Corrections in Letters PatentN o. 1,072,963.
It is hereby certified that in Letters Patent No. 1,072,963, granted September 9, 1913, upon the application of Henry F. Loewer, of Rochester, New York, for an improvement in Machines for Trimming Last-Heels, errors appear in the printed specification requiring correction as follows: Page 3, line 58, for the Word stud read studs; same page, line 125, and page 4, line 4, for the compound Word anglegage read ankle-gage; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Ofiice.
Signed and sealed this 7th day of October, A. D., 1913.
[SEAL] R. T. FRAZIER,
Acting Commissioner of Patents.
US71631412A 1912-08-21 1912-08-21 Machine for trimming last-heels. Expired - Lifetime US1072963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US71631412A US1072963A (en) 1912-08-21 1912-08-21 Machine for trimming last-heels.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71631412A US1072963A (en) 1912-08-21 1912-08-21 Machine for trimming last-heels.

Publications (1)

Publication Number Publication Date
US1072963A true US1072963A (en) 1913-09-09

Family

ID=3141196

Family Applications (1)

Application Number Title Priority Date Filing Date
US71631412A Expired - Lifetime US1072963A (en) 1912-08-21 1912-08-21 Machine for trimming last-heels.

Country Status (1)

Country Link
US (1) US1072963A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805693A (en) * 1953-09-11 1957-09-10 United Shoe Machinery Corp Machines for forming attaching faces of wedge heels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805693A (en) * 1953-09-11 1957-09-10 United Shoe Machinery Corp Machines for forming attaching faces of wedge heels

Similar Documents

Publication Publication Date Title
US2359395A (en) Machine for operating upon shoe soles
US1072963A (en) Machine for trimming last-heels.
US3129447A (en) Machines for operating on edge portions of workpieces
US3019461A (en) Sole rounding machines
US3704604A (en) Automatic bottom roughing machine
US1450667A (en) Bacon-stringing machine
US2127707A (en) Machine for operating on shoes
US1248971A (en) Heel-trimming machine.
US1118484A (en) Sole rounding and channeling machine.
US958028A (en) Sole-marking machine.
US1284847A (en) Heel-shaping machine.
US1362182A (en) potter
US1684072A (en) Lathe
US1372058A (en) Shank-edge trimmer
US1919740A (en) Edge setting machine
US1402533A (en) Shoe-last-remodeling machine
US826075A (en) Book-trimmer.
US1921165A (en) Edge trimming machine
US1292979A (en) Sole-preparing machine.
US1325724A (en) keller
US488442A (en) Lasting-machine
US425547A (en) Painting-machine
US888105A (en) Vamp-folding machine.
US1362183A (en) Manufacture of articles having a systematic resemblance to a pattern
US900171A (en) Machine for snipping and cementing shoe-uppers.