US1130801A - Work-support. - Google Patents

Description

E. A. CRIDLAND.

WORK SUPPORT.

APPLICATION FILED 0017.10, 1910.

Patented Mar. 9, 1915.

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EQA. CRIDLAND, WORK SUPPORT. APPLIOATION FILED 00T.10, 1910.

1,130,801. Patented Mar.9, 1915.

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ERNEST ALBERT GRIDLAND, OF LEICESTER, ENGLAND, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY,'OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

Application filed October 10, 1910.

To all whom it may concern Be it known that I, ERNEST A. CRIDLAND, a subject of the King of England, residing at Leicester, Leicestershire, England, have invented certain Improvements in VVork- Supports, of which the following description, in connection with the accompanying drawings, is a specification, likereference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for making turn shoes and relates perticularly to devices to assist in performing thereon the operation known as i re-forming In the operation of re-forming a turn shoe, it has been found necessary, after the shoe has been stretched on the expanding jack of the reforming machine, forthe operator to use a hammer or jiggering tool to smooth out the upper leather adjacent to the feather of the insole at the toe, and along the sides of the shoe and occasionally at the heel seat.

In prior machines it has been customary to so construct the jack that the sole of the shoe, when arranged thereon is disposed in approximately a horizontal plane. In this position of the shoe, however, it is diflicult for the operator to hammer, tap up or beat out those portions of the shoe upon which this operation is necessary or desirable.

It is an object of the present invention to overcome this difiiculty and inconvenience and to this end the invention comprises a expansible jack for re-forming turn shoes in which the shoe is supported with its sole at a convenient angle to the horizontal.

The shoe is inclined so that its sole is at approximately an angle of 45 with the horizontal as it has been foundthat this inclination is most suitable and convenient for the operator when he is performing the operation of re-forming'the sole or tapping up the upper at the feather.

I To further facilitate operations upon the shoe the portion of the jack carrying the I shoe is arranged to rotate about the longitudinal axisof the inclined portion of the jack and the inclined portion is arranged to revolve about a vertical axis. The toe, the sides .or the heel end of the shoe may thus be brought to that position which is found most suitable for the convenience of the operator.

Specification of Letters Patent.

WORK-SUPPORT.

Patented Mar. 9, 1915.

Seria1No.586,249. i

Another feature of the invention is an expansible jack embodying mechanism for use in jacks for general purposes but which is especially designed for use with the other featuresof this invention in re-forming turn shoes. The expansible jack is supported so that it may not only berotated as above stated, but so that the expansive and con tractile movements of the jack are entirely lndependent of this rotary movement "and preferably the mechanism is so arranged that these movements are effected alternately by power means. By this construct1on the jack may be rotated in either its expanded or contracted position or during the transition from either position to the other. This constructionis also adapted to the vertical form of jack. 3

These and other features of the invention will appear more fully from the following description when read in connection with the accompanying drawings, and will be pointed out in the claims. I

In the drawingsz-Figure 1 shows a side view, partly in section, of a turn shoe reforming jack embodying the present invention; Fig. 2 is a front view of thelower portion of the machine shown in Fig. 1; Fig. 3 is a transverse section on the line 3-3 of Fig. 1; Fig. 4 is a detail, partly in section, to be subsequently referred to. i

The base of the preferred expanding'form of jack comprises a vertical standard or column 1 to which is secured the upper inclined portion or head 2. This portion is arranged is provided with a flange '8 depending from its lower periphery, the flange being provided with a groove 9 just below the top plate 6 in which-is set aring 10 which engages the lower surface of the top plate 6 near its edge. Provision is thus/made for rotation of the cas ng about the longituthe jack supporting casing 7. This casing dinal axis-of the'inclined head 2. The bar 11 is guided for longitudinal movement along the axis of the inclined head 2; atlts lowerend it is provided withxa rack 12 and at its upper endwith a socket in which a projection 13 on the lower end of the double rackbar lt'is pivotally disposed; the proameter as the toothed portion and eachis provided with a groove 22 into which a screw. 23 extends for retaining the pinion against longitudinal 'movement, Beneath the pinion 17 is the rack bar v24: from one end of'which rises the standard 25 for 2 upon the last and that either before,

supporting the heel portion of the expansible last. I Beneath the pinlon 18 is the rack bar 26 from one end of which rises the standard 27 forsupporting the toe portion of the expansiblelast. The double rack 14 rises between the rack bars and engages with the teeth upon its sides the pinions 17 and 18.; I I

It will now be apparent that when-the bar 11 is moved longitudinally upward the double rack bar 1 1 will be forced upward and the pinions rotated outwardly in opposite directions. The pinion "17 will thus cause) the rack 24 to move the heel portion of the last outward andthe pinion 18 will operate the bar 26 to move the toe portionof the last outward. The toe and heel portions of the last'are thus moved simultaneously outward to stretch the shoe positioned thereupon. It will be seen that by the means just described theshoe may be stretched during, or after the stretching operation it maybe rotated to any angular position about the axisof theinclined portion 2.

The means for operating the, jack to stretch the shoe consists of a toothed segment 28 pivoted at 29 and provided with a lever projection 30' which is oscillated by a I connectlng rod 31. The lever projection 30.

. off the segment 28 has apertured bifurcations 50, at its free end. A block 32 having" flattened portions 51 (Fig. 1) is pivoted in thebifurcations 50; and has passing through it the reduced portion 33 of the connecting rod 31. This reduction provides below theablock32 a shoulder 34 against'which the block 32 rests and which during upward movement of the connecting rod 31 com- .municates positive upward movement to the the;lever 30' through the resilient means 35'- and this pressure is communicated as de-v scribed to the heel and toe portions of the expansible last to stretch. upon. 7 v

' Motion is given to the connecting rod. 31' by the crank 37 upon theshaft 38which is journaled in the boxes 39, 40 on the main frame of the machine. The-pitman bearing 41 on the wrist pin of the crank is pros vided with a neck 12 into a threaded hole in which one'endof the connecting rod 31 is.

screwed and wherein itmay be secured in any. position of longitudinal adjustment by the lock nut 43.- ,7 Provision is thus'made for. adjusting the shoulder 34 relativelytothecrank to regulate'the positionof the heel and. toe parts of the expansible jack when closed. The pulley 414k is constantly driven from. any convenient source of power and by meansof an intermittent clutch, I'notion isv communicated therefrom to the shaft 38 for periods; of a half-revolution ata time. When the clutch is thrown in by the lever 45 the shaft 38 :makes one half a revolution and stops, preferably upon a dead center in eachposition. The-clutchexcept in combination with other elements of the machine forms no part of my invention, clutches for performing this funotionbeing well known in the art. 7

In the operation of the machine the operator manipulates the clutch lever to bring the wrist pin of the crank 37 into its uppermost position and to thus bring the heel and toe-portions of the last nearest together or to closed position by the engagement of the shoulder 34 with'the lever 30 and its consequent upward movement. When the last is in this position the turn shoe may be readily placed thereupon and the operator then by moving the clutch lever 45 in the oppo: site direction causes "the crank to make an motion ofthe connecting rod 31 is communi cated through the spring '35 to the lever 30 and segment 28, to the bar 11, double rack- .bar 14, pinions 17 and 18, racks 24, 26 re.-

sible last and stretch the shoe placed thereon. I

During this movement the spring 35, will be compressed ,p and thestretching tension to which the shoe is thereby subjected will,

depend upon the amount of compression of the shoe there other half-revolution, to thG'POSltlOII shown 111 Fig. 1. In this movement the downward Cal Cir

the springwhich may be regulated to the amount desired by adjusting the thumb nut 36 upon the reduced portion 83 of the connecting rod. The expansive movements of the last may be repeated at will and the turn shoethus thoroughly stretched and formed, the manipulation of the sole and shoe by the hand tool being interspersed between the stretching operations of the expanding last.

Having thus described the preferred embodiment of my invention, which may however be variously modified, and explained the operation thereof, I claim as new and desire to secure by Letters Patent of the United States:-

l. A machine for reforming turn shoes comprising a standard having a portion arranged at a fixed acute angle to the vertical, an expansible last mounted'on said standard, power operated mechanism for repeatedly and forcibly expanding the last while it is within the shoe, and means for controlling the number of power operations to which the shoe is subjected.

2. In a device of the class described a standard, a head extending therefrom at a permanent angle of substantially 45 to the horizontal, a last support arranged on said head to rotate about an axis inclined at said angle, and means comprising a depending flange on the last support and a cooperating ring thereon and engaging the head for holding the last support upon the head.

3. A device of the character described comprising an upright column, an inclined head mounted for adjustment axially of said column in the top thereof, an expansible last mounted on said head for rotation with respect thereto, and means for expanding said last.

4. In a device of the class described, the

combination with an upright standard, of

an inclined head mounted thereon, an expansible last comprising toe and heel portlons rotatably mounted on said head, and means for moving the toe and heel parts of the last toward and from each other independent of the rotative movement of the last.

5. In a device of the class described, the combination of an expansible last having heel and toe portions, means for maintaining said last in constant angular relation to a horizontal plane, means permitting the last to be rotated about an axis in the said angular relation, and power-operated means under manual control and acting independently of said rotation for resiliently moving said heel and toe POIt1OI1S simultaneously from each other and, upon further manipulation of said manual control, for moving them toward each other.

6. In an expansible last, means for operating the same comprising standards for the heel and toe portions of the last, racks at an angle to the standards and connected thereing swiveled connections with said double rack bar, and means to reciprocate said rack bar..

7. A device of the character described comprising, in combination, an upright support, a head portion arranged at an angle to the upright support, an e'xpansible last rota: tably carried on said head, said last having heel and toe portions, and operating means comprising racks and pinions to positively contract and yieldingly expand said heel and toe portions independently of rotary movement of the last.

8. In a device of the class described, a support, an inclined head having a circular top plate on said support, a last support mounted on said head and having a depending flange surrounding said top plate and provided with a groove, a retaining ring seated in said groove below the top plate whereby rotation of said last on said head is permitted, and means for contracting and expanding said last independently of its rotating movement. 7 1

9. In a device for reforming turn shoes, an extensible last having heel and toe parts and provided with a pivot at substantially right angles to the longitudinal medial line of the last, means supporting said pivot for rotation on an axis at an acute angle to the horizontal, and means forv automatically moving said heel and toe parts simultaneously from positions of contraction to posi-' tions of distention and back again.

10. In a device of the class described, a last comprising heel and toe parts, means for moving said parts simultaneously and equally from the axis of the last, said axis being perpendicular to the plane of the heel plate at a fixed acute angle to the horizontal and passing through the shank, means mounting said last for rotation about said axis, means acting upon said moving means to positively close said parts and to open them resiliently, and a clutch adapted, upon one actuation, to actuate said acting means to positively close the last parts and upon the next operation to open said parts resiliently and so on alternately.

11. In a device of the class described toe and heel last portions, a support therefor mounted for rotation about an axis lying between the last portions, and means movable along said axis for moving said last portions relatively to said axis, and atright angles thereto.

12. In a device of the class described, a

support, last portions arranged to slide on.

said support in the direction of the longitudinal axis of the last, a mounting for said support permitting its rotation about an axis at right angles to said axis, and power means including a rack and pinion for movmembers 25, 27 mounted to slide on the carriei"; 2i su port 2 on which the earrier is rotjzttagbl j mounted; and mechanlsm comp'lfi a non-rotatable slide 11, a joint 13,

p1 161E 17; 18,2tnd racks 24, 26 for communicw fiofls 'of this 15mm may be cfbtained for mea er eating movement to the heel and toe mem 10 bGlS While permitting the Carriers to rotate. v In testimony whereof I have signed my name to this specification-i11 the presence of two subscribing Witnesses I ERNEST ALBERT CR-IDLA'ND. Witnesses: V ELEANOR PYWELL, I e ARTHUR ERNEST JERRAM.

five cents each, byaddressing the" Commissioner of Patents,

Washington', 11.0. r

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