US1981062A - Shoe machine - Google Patents

Description

Nov. 20, 1934. MORRILL 1,981,062 I SHOE MACHINE Original Filed July 25, 192'! s Sheets-Sheet 1 A. R. MORRILL Nov. 20, 1934.

SHOE MACHINE Original Filed July 25, 192'! 3 Sheets-Sheet 2 n-br Nov; 20, 1934. A, R, M RRI LL 1,981,062

SHOE MACHINE Original Filed July 25 1927 3 Sheets-Sheet 3 Patented Nov. 2!), 1934 "entree STATES SHOE MACHINE Alfred R. Martin, Beverly, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Original application July 25, 1927, Serial No;

208,116. Divided and this application Becom her 20, 1932, Serial No. 648,074

17 Claims.

The present invention relates to the construction and arrangement of the means for supporting and for controlling the operation of shoe and other similar machines having a standard on which the operating parts of the machine are mounted and a foot or knee operated treadle extending from the standard for controlling the movements of the operating parts.

The object of the invention is to produce a novel and improved mounting for shoe machines and the like which will have a novel and advantageous arrangement for assembling and controlling the machine as well as for providing convenient adjustment and access to the operating parts of the machine.

With this and other objects in view, as will hereinafter appear, the several features of theinvention consist in the devices, combinations and arrangement of parts hereinafter described and claimed which, together with the advantages to be obtained thereby, will be readily understood by those skilled in the art from the following description taken in connection with the accompanying drawings which illustrate the preferred 25. embodiment of the invention in a turn sewing machine, in which Fig. 1 is a view in side elevation of the machine; Fig. 2 is a plan view of a part of the base of the machine taken on the line 22 of Fig. 3; Fig. 3 is a sectional View in side elevation of the base; Fig. 4 is a detail view partly in section taken on the line 4--4 of Fig. 6 of the knee control mechanism for operating the machine at low speed, the parts being shown in position for the full speed operation; Fig. 5 is a view similar to Fig. 4 with the parts in position to operate the machine at low speed; and Fig. 6 is a plan View of the parts shown in Figs. 4 and 5 taken on the line 66 of Fig. 3.

The shoe machine illustrated in the drawings is adapted for sewing the upper to the sole of a turn shoe and is provided with the usual operating elements of a chain stitch turn sewing machine. These elements are actuated in timed relation from a cam shaft which is driven by means of a directly connected motor. The motor is adapted to run at either of two speeds, and is controlled by the operator through a two-speed starting and stopping mechanism which operates to stop the machine with the needle of the machine retractecl fromthe work. For a complete description of these elements and their actuating mechanisms, reference may be had to the inventors pending application Serial No. 208,116, filed July 25, 1927 for Inseam shoe sewing machines, of which the present application'is a division. 1

Referring more specifically to the drawings, the operating elements of the machine include a needle 2, a looper 4, a channel guide .6 and a back rest 8 carried within the upper part of a casing 10 which forms the headof the. machine and which houses the electric motor'lZ-atth lower part of the casing connected by'suitable gearing to the cam shaft 14 for operating the stitching elements, The head casing 10 is mounted on a'tubular support 16 fitting within the upper end of a column or base 18 within which'it isslidable for adjusting the height of the machine. The mechanism for controlling the motor. comprises a, two-speed switch 19 movable to high, low, reverse and off positions anda control lever 20 for-causing the switch to be operated. To effect the operation of the machine in the forward direction the control lever 20 is movable by a starting and stopping foot treadle 22 either to an intermediate position for low speed or to the upper limit of its movement for high speed operation of the machine. The cam shaft 14 is automatically caused to rotate in a reverse direction by the motor in bringing the machine to rest with the needle retracted from the work when the lever is moved to its lowermost position.

The starting and stopping-treadle 22 of the machine is pivotally mounted at 24 on the base of the'machine and bearsat its rear end against the lower end of a verticalrod 26 which forms one of the connections to the control lever 20 for operating the two-speed switch 19. The vertical rod 26 is normally held ina depressed position withthe foot'treadle 22 raised by means of a compression spring 28 coiled about-the rodbetween acollar 30 on the rod and a bracket 32 through which the rod slides. A sleeve 34 is formed at the upper end of the rod 26 to receive the lower end of a rod 36 which is threaded for lengthwise adjustment to an elongated nut or sleeve 38 adapted to fit within the sleeve 34 and connected thereto as will be described. H I

In order that themachine may readilyibe adjusted to the height of the operator, the tubular support 16 is maintained in the main column by a vertical shaft 40 rotatably mounted in a journal 42 formed in the support 16 andis held against endwise movement relatively thereto by means 'of a bearing block 44 formed on the shaft which is ,adapted to sustain the weight of I the support 16 togetherwith the headlO. The shaft 40 at its lower end .isthreaded into a stationarynut46 mounted in the base 18 and its upper end is provided with a pinion 48 adapted to mesh with a worm gear 50 on a hand operated cross shaft 52 having a squared end 54 extending outside the support 16 so that the shaft 40 may be readily rotated to raise or lower the head of the machine. The rod 36 through which the starting and stopping switch is controlled also carries a pinion 55 which meshes with the pinion 48, so that the rod 36 is rotated to adjust itself automatically as the head of the machine is raised or lowered, thereby causing the efiective length of the vertical treadle connection composed of the rods'26 and36 to,

change as the height of themachine is adjusted.

Mechanism is also provided in the present machine for enabling the operator to reduce the machine to low speed whenever it ,is desired to do so independently of the foot treadle 22 and without throwing the stopping mechanism into operation. This mechanism comprises a horizontally movable knee treadle 56 mounted upon a rod 58 which is loosely fitted to move longitudinally in the bracket 32 and which is normally held in an advanced position by means of a compression spring 60 coiled about the rod between a collar 62 and the bracket 32. The movement of the rod 58 is limited in one direction by'the enment of a collar 66 with end to the collar 64 on gagement of acollar 64 with one arm of the bracket and in the other direction by the engageanother arm of the pivotally secured at one the rod 58 and at the other end to the central pivot of two toggle links '70 and '72 which are pivotally connected respectively at their free ends to the nut 38 on the rod 36 and'the sleeve. 34 on the rod 26. The toggle is held normally in straightened position (see Fig. 4) by the pressure of the spring 60 acting on the knee treadle rod 58 to hold the rods 26 and 36 rigidly in position with relation to each other when they are raised or lowered by the action of the foot treadle 22 in starting and stopping the machine. When, however, it is desired to operate the machine at low speed, the knee bracket 32. A'link 68 is treadle 56 is pressed inwardly by the operator,

1 78. When the height of 12, the head casing 10 is 16 about the pivot'stud '78 breaking the toggle (see Fig. 5) and depressing the rod 36 part way to bring the lever 20 exactly to intermediate low speed position. I 7

The connections through which the control lever 20 in the head of the machine is actuated frointhe connecting rod 36 in thebasecomprise avertical rod 74' connected at its upper end to one arm of the control lever 20 and connected at its lower end to a lever arm '76 formed on a sleeve '77 surrounding a pivot stud '78 carried by the support 16. A'second lever arm is formed on the sleeve to engage the upper end of the vertical rod 36and is held yieldingly' in engagement therewith by means of a spring 82 coiled about the stud the machine is adjusted, therefore, the corresponding variation in length of the treadle rod connections-causes the position of the control lever 20 to remain the same.

' To permit removal or adjustment of the motor hinged to the-support so that the head mayv readily "be swung forwardly about an axis concentric to thatabout'which the lever '76, 80 is operated. "The motor is removably supported in the headby any suitable means, such as one or more bolts 84 passing th'rough the casing into the motor frame. When the head is in an upright position, the bottom portion of the headcasing 10- is closed by the upper surface of the. support 16 andthehead may be secured in place pylons or more'bolts 86. When the head casing is"swung ing with the control lever 20 or injuring the other I operating elements of the'machine. While the lever arm 80 is out of contact with the rod 36 the spring 82 maintains the lever arm in a position corresponding to off position of the control lever 20.

The invention having been thus described, what is claimed'is: j

1. A shoe machine having, in combination, a machine column adjustable tothe height of the operator, a head, devices for operating on a shoe mounted in the head, a treadle mounted in the column, a treadle rod for controlling said devices from the treadle, and means for simultaneously adjusting the length of thecolumn and the treadle rod.

2. A shoe machine having, in combination, a telescopic machine column, a head, devices for operating on a shoe mounted in the head, a treadle mounted in the column, a treadle connecting rod screw threaded for lengthwise adjustment in the column, a screw threaded rod for adjusting the length of the column, andme'ans for simultaneously rotating the rods to adjust the height of the machine.

3. A shoe machine having, in combination, a machine column, a head, a support for the head mounted for sliding movementin a vertical direction on the column, means'for adjusting the height of the support on the column, a treadle mounted in the column for controlling the machine, a treadle rod connecting the head and the treadle, and means connected between the support adjusting means and the treadle rod for automatically changing the effective length of the treadle rod as the support is adjusted vertically.

4. A shoe machine having, in combination, a machine column, a head, devices for operating on a shoe, and a control member in the head, a support for the head mounted for sliding movement in a vertical direction on the column, a screw,

threaded rod on which the weight of the support is carried, a screw, threaded rod connecting. the treadle with the control member and gearing connected between the threaded rods for rotating them simultaneously to cause the effective length of the treadle connecting rod to change as the support is adjusted vertically.

5. A shoe machine having, in combination, a machine column, a head,.devices for operating on a shoe and a control member in the head, a support for the head mounted for sliding movement in a vertical direction on the column, a pair of vertical screw threaded rods, an internally threadtreadle mounted in'the column, a

ed part surroundingone of the rods on which the v weight of the support is carried, a treadle mounted in the column, an internally threaded part threaded rods for causing the port for thehead mounted for sliding movement 1 in a vertical direction on the column, a pair or vertical screw threaded rods, an internally-threaded part surrounding one of the rods on which the weight of the support is carried, a treadle mounted in the column, an internally threaded part surrounding the other of the rods for connecting the treadle with the control member,intermeshing gears on the threaded rods for c ausing the effective length of the treadle connecting rod to change as the support is moved vertically, a worm meshing with one of said gears for rotating the rods, and a horizontal shaft to which the worm is secured having an operating portion projecting from the side of the support.

'7. A shoe machine having, in combination, a machine head, devices for operating on a shoe mounted in the head, a machine column on which the head is secured, a telescoping rod for controlling said devices, a knee operated treadle, and a toggle mechanism for actuating the rod from the knee treadle.

8. A shoe machine having, in combination, devices for operating on a shoe, a telescoping rod comprising two parts and movable in a lengthwise direction for controlling said devices, a toggle 25- mechanism connecting the two parts of the rod, a knee operated treadle connected to the toggle mechanism, and spring means acting normally to hold the toggle in straightened position.

9. A shoe machine having, in combination, a vertical machine column, a head, a support for the head mounted on the column, shoe working devices including a control member in the head, a rod connected with the control member, a knee operated treadle movable in a substantially hori- 35' zontal direction on the column and toggle links arranged to be moved towards and from alinement by the treadle for actuating the rod to cause the control member to be operated.

10. A shoe machine having, in combination, a head, devices including a control member in the head, a support for the head mounted for sliding movement in a vertical direction on the column, means for adjusting the height of the support on the column, a treadle rod connected withthe control member, a knee operated treadle movable in a substantially horizontal direction on the column, toggle links arranged to be moved towards and from alinement by the treadle for actuating the rod to cause the control member to be operated, and means connected between the support adjusting means and the treadle rod to cause the effective length of the treadle rod to change as the support is adjusted vertically.

11. A shoe machine having, in combination, a vertical machine column, a head, devices in the head including a control member movable to two extreme positions and to an intermediate position for controlling the operation of the machine, a foot treadle mounted at the lower part of the column, a two-part treadle rod connecting the treadle with the control member to move it at the will of the operator to any of its controlling positions, toggle links connecting the parts of the treadle rod to permit limited relative movement, and a knee operated treadle connected to the toggle and arranged to cause the control member, while the foot treadle is held depressed by the operator, to be shifted between an extreme position and said intermediate position.

12. A shoe machine having, in combination, a vertical machine column, a head, devices in the head including a control member movable to two extreme positions and to an intermediate position for controlling the operation of the machine, a foot treadle mounted at the lower part of the column, a treadle'rod connecting the treadle with the control member to move it at the will of the operator to any of its controlling positions and akneeoperated treadle on'the column arranged to causethe' control member'while the foot treadle is held depressedto be shifted between an extreme position and'said intermediate position.

13. A shoe machine having, in combination, 'a vertical machine column, a head, devicesin the head including a control member movable to two extreme positions and to an intermediate position for controlling the operation of the machine, a support for the head mounted for sliding movement in a vertical direction on the column, means for adjusting the height of the support on the column, a foot treadle mounted at the lower part of the column, a treadle rod connecting the treadle with the control member to move it at the will of the operator, a knee operated treadle on the column arranged to cause the control member while the foot treadle is held depressed to be shifted between an extreme position and said intermediate position, and means connected between the support adjusting means and the treadle rod for changing the effective length of the treadle rod as the support is adjusted vertically.

14. A shoe sewing machine having, in combination, a machine base, a head having an opening in its lower portion through which a driving motor may be inserted and removed, a driving motor for the machine within the head, devices for operating on a shoe in the upper portion of the head, and a hinge connection between the base and the head to permit the head to be swung off or onto the base to respective positions in which access to the motor is provided through the opening in the head and in which the opening is covered by the base.

15. A shoe sewing machine having, in combination, a machine base, a head having in its lower portion, a driving motor for the machine within the head, devices for operating on a shoe in the upper portion of the head, a hinge connection between the base and the head to permit the head to be swung 01f or onto the base to respective positions in which access tothe motor is provided through the opening in the head and in which the opening is covered by the base, a treadle in the base of the machine, a treadle actuated rod connected to the treadle and 'a motor control lever mounted concentrically with the axis of the hinge connection for engagement with the treadle rod.

16. A shoe sewing machine having, in combination, a machine base, a head having an opening in its lower portion, devices in the head including a control member, a support for the head mounted for sliding movement in a vertical direction on the column, a hinge connection between the support and the head to permit the head to be swung oiT or onto the support to respective positions in which access to the motor is provided through the opening in the head and in which the opening is covered by the support, a treadle in the base of the machine, a treadle rod connected to the treadle, a control lever connected with the control member and mounted for engagement with the treadle rod, and means connected between the support adjusting means and the treadle rod for changing the efiective length of the treadle rod to maintain the control lever in the same angular position relative to the machine head while th height of the support is being adjusted. I

17. A shoe sewing machine having, in combination, a. machine base, a head having. an opening in its lower portion, a driving motor for the machine in the head, devices including a control member in the head movable to running and stop positions, a hinge connection between the base and the headto permit the head to be swung off or onto the base to respective positions in which access to the motor is provided through the opening and in which the opening is covered by the base, a treadle in the base of the'machine, a treadle actuated rod, a separable connection between the treadle rod and the control member to permit the head to be swung freely of: the base, resilient means acting on the treadle rod to cause it to move with the control member when the treadle is released to the stop position of the control member, and resilient means acting on the control member to cause it to remain in off position when the connection with the 'treadle rod isseparated. v v

, ALFRED R. MORRILL.

Images