US1268295A - Sole-leveling machine. - Google Patents

Description

W. C. STEWART.

soLE LEvELxNo MAcmNE.

APPLICATION FILED MAR. 23| |911.

' Patented .Tune 4, 1918.

2 SHEETS-SHEET I w. c. STEWART. SOLE LEVELING MACHINE.

APPLICATION FILED MAR. 23|l9l1.

Patented June 4, 1918.

2 SHEETS-SHEET 2- r l fr pero,

WILLIAM C. STEWART, OF SWAMPSCOTT, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO UNITED SI-IOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A. CORPORATION OF NEW JERSEY.

soLn-nnvnnmc MACHINE.

Specivcation of Letters Patent.

Patented J une 4, 1918.

Application led March 23, 1917. Serial No. 156,827.

To all whom it may concern:

Be it known that I, WILLIAM a subject of Great Britain, residing at Swampscott, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Sole- Leveling Machines; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the are to which it appertains to make and use the same.

The present invention relates to sole leveling machines and moreparticularly to a heel clamp for holding a shoe in position upon the last of a sole levelingmachine of the C. STEWART,

' rolling pressure type.

It is customary in this type of machine to provide means forholding the heel end of the shoe down upon the last during the operation of the pressing form upon the forepart of the shoe and to remove the clamping means into an inoperative position when the form is in engagement with the heel portion of the shoe sole. The actuating mechanism for the heel clamp isarranged to impart simultaneous inward and downward movements to the clamp to cause the latter to project over and engage with the heel end of the sole. With this mode of operation it sometimes happens, however, that the heel clamp engages with the sole prior to the completion of the inward movement which tends to injure the sole or displace the latter relative to the last.

`The object of the present invention is to provide a heel clamp of an improved form which is actuated automatically to engage withand clamp the'heel end of the sole without tendency to damage the sole or displace the sole relative to the last. j

W'ith this object in view a feature of the invention contemplates the provision in 'a machine of this type of a heel clamp movable toward and from the last and mechanism for actuating the clamp to impart an inward movement to the clamp, until the latter engages with the end of the shoe and to thereafter move the clamp longitudinally into operative engagement with. the heel portion of the sole. v

Still further features of the invention advantages of which will be obvious to those skilled in the art from the following description.

The preferred form of the invention is illustrated in the accompanying drawings, in which Figure 1 is a view in side elevation of a sole leveling machine having the invention embodied therein; Fig. 2 is an enlarged detail view in side elevation of the heel clamp and its actuating mechanism; and Fig. 3 is a top plan view of the heel clamp actuating mechanism.

The machine illustrated in Fig. 1 of the drawings has the same construction and mode of operation as that shown and described in the patent to Holt No. 944,620, December 28, 1909. This machine is a double machine and comprises two sole pressing forms 10 mounted on carriers 12, and two coperating lasts 14 mounted on jacks or last posts 16. The last posts 16 are adjustably mounted in carriers 18, and are arranged to be longitudinally adjusted in said carriers by means. of handles 20 and hand wheels 22. Each form carrier is connected to its coperating last carrier by means of a link 24,' and the last carriers are connected by means of links 26 to cranks on concentric crank shafts 30.` Only one set of devices for operating the crank shafts 30 is illustrated. In the illustrated device the crank shaft 30 is driven from the shaft 32 by means of a worm 34 and worm wheel 36 mounted on the shafts 32 and 30, respectively. The shaft 32 is driven by a friction clutch 38, the mechanism for operating which is so arranged that the clutch may be connected by means of a foot treadle, and continue to operate as long as the foot treadle is depressed. Upon releasing the foot treadle, the clutch is automatically disconnected by means of a timing cam on the crank shaft 30 to stop the machine with the last located in a position of presentation for the convenient removal of the shoe.

According to the present invention mechanism is provided for first moving the heel clamp inwardly toward the last until the are mounted upon the collar 48, secured to the last post, so that the heel clamp partakes of the longitudinal movements of the last post relative to the latter. The bell crank 54 is pivoted independently of the last post, however, and operatively engages with the bell crank 46 through the engagement of the roll 52 with an elongated face 49 formed upon the depending arm of the bell crank 46. With this construction an adjustment of the last post merely moves the roll 52 along the face 49 without disturbing the operative relation of the parts.

The present mechanism is so constructed that it may be conveniently applied to existing machines and with this end in view the arm 56 supporting the bell Crank 54 is loosely journaled upon the stationary shaft 58 and is provided with the second arm 55 extending therefrom which is secured at its outer end to the jack carrier 18.

While it is preferred to employ the specific construction and arrangement of parts shown and described, it will be understood that this construction and arrangement is not essential except so far as specified in the claims, and may be changed or modified without departing from the broader features of the invention. p

The invention having been described, what is claimed is:

l. A sole pressing machine, having in combination,l a pivotally-mounted last post, a last on said post, a cooperating sole pressing form, means for relatively oscillating the last and form to level the sole of a shoe, a heel clamp supported on said post, and means.l controlled by the movement of the last, to swing the clamp into engagement with the end of the shoe on the last while maintaining said clamp beyond the surface of the sole and to longitudinally draw the clamp into Contact therewith after the clamp engages the end of the shoe.

2. A sole pressing machine having, in combination, a pivotally-mounted last post, a last on said post, a cooperating sole pressing form, means for relatively oscillating said last and form to level the sole of a shoe, a heel-clamp supported on said post, and springoperated means, controlled by the movement of the last, to swing the clamp into engagement with the end of the shoe while maintaining said clamp beyond the surface of the sole and to longitudinally draw the clamp into yielding contact therewith after the clamp engages the end of the shoe.

3. A sole pressing machine comprising a shoe supporting member, a cooperating sole pressing member, means for relatively oscillating` the two members, a heel clamp, and means for operating the clamp to cause the latter to first advance into engagement with the heel end of a shoe and to thereafter move in a direction substantially normal to the surface of the sole into engagement therewith.

4. A sole pressing machine comprising a shoe supporting member, a cooperating sole pressing member, means for relatively oscillating the two members to level a shoe sole, a heel clamp, and means for moving the heel clamp toward the shoe constructed and arranged to cause an initial movement of the heel clamp in a direction substantially parallel to the surface of the sole until the clamp engages with the heel end of the shoe, and thereafter move the clamp in a direction substantially normal to the surface of the sole.

5. A sole pressing machine comprising a shoe supporting member, a lever fulcrumed upon the shoe supporting member, a heel clamp pivotally mounted upon the lever, means for oscillating the lever, and means for causing the heel clamp to rock about the outer end of the lever to move the heel clamp toward and from a shoe when the lever is oscillated.

6. A sole pressing machine comprising a shoe supporting member, means for oscillating the member, a heel clamp, a stationary cam, and connections between the cam and heel clamp for causing the latter to move toward and from the shoe when the supporting member is oscillated.

A sole pressing machine having, in combination, a shoe-supporting last, a cooperating sole-pressing form, a carrier, a last post adjustably mounted in said carrier, means to oscillate the carrier to level the sole of a shoe, a heel-clamp operating lever mounted on said post, a cam-lever, for controlling'the operation of said clamp, mounted on said carrier, and contact connections between the cam-lever and the clamp-operating lever whereby the last post may be adjusted without effecting the operation of the heel-clamp.

8. A sole pressing machine comprising a carrier, means for oscillating the carrier, a post adjustably mounted in the carrier, a heel clamp supported upon the post, and mechanism supported upon the carrier for operating the heel clamp when the carrier is oscillated.

9. A sole pressing machine comprising a carrier, a post adjustably mounted in the carrier, a heel clamp supported upon the post, a stationary cam, and a bell crank pivotally supported upon the carrier to cause the operation of the heel clamp by the cam.

l0. A sole pressing machine comprising a carrier, a post adjustably mounted in the carrier, a bell crank fulcrumed upon the post, a heel clamp supported upon one arm of the bell crank, a stationary cam, a second bell crank fulcrumed upon the carrier lll@ and connecting the earn with the first men- `toned bell crank to rock the lathter when the carrier is oseillated, and means for roekng the heel clamp about` the pivotal snpport when the bell Crank is oseillated.

11. A sole pressing machine Comprising a shoe supporting member, an arm fulornned at one end upon the shoe supporting meinber, a heel clamp pivotally connected to (Jopies` of thigpairzem,y may be obtained for ve cents each, by addresksing the Gominissioner of lPaizalrllifr` the freeend ofthe arm, a stationary arm,

toward and `from*` the shoe l supportingV member. p

Washington, D. Cl.

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