US1258400A

US1258400A - Shoe-holding mechanism.

Info

Publication number: US1258400A
Application number: US5835715A
Authority: US
Inventors: Edward Erickson
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1915-10-28
Filing date: 1915-10-28
Publication date: 1918-03-05
Anticipated expiration: 1935-03-05

Description

E. ERICKSON.

SHOE HOLDING MECHANISM.

APPLICATION FILED OCT. 28,1915

1,258,400. Patented Mar. 5, 1918.

ass: 971167:

{CZ c /lzzi 440% UNITED PATENT OFFICE.

.enwimn snroxson, or BEVERLY, 'iuhsshonusnrrs, ,Assmnon, BY MESNE Assisti- MENTS, TO UNITED SHOE MACHINERY CORPORATION, or rarnason, new JERSEY,

A CORPORATION NEW JERSEY.

SHOE-HOLDING MECHANISM.

Specification ot'letters Patent.

Patented Mar. 5, 1918.

Application filed October 28, 1915. Serial No. 58,357.

To all whom it may concern: 1

Be it known thatI, EDWARD ERICKSON, a citizen of the United States, residing at Beverly, in the county of'Essex and State of Massachusetts, have invented certain. new

and useful Improvements in Shoe-Holding Mechanism; and I do hereby :declare the following to be a .full, clear, and exact description of the invention, such .as will enable others skilled in the arttowhich it appertains to make and use the same.

This invention relates to shoe holding mechanism and more particularlyitoshoe supportlng 1acks for use 111 machines for performing bottoming operations on. shoes,

such as welt butting and tacking machines.

The primary ob]ect of the present inven-I tion is to provide ashoe holdmgdevice for rigidly supporting a shoe While it isbeing by said mechanism to lock the jack in an impact supporting position. 7 V

The preferred, although not the only, use of the invention is in connection'with welt butting and tacking machines. In welt butting and tacking machines-a weltechunsolcd shoe is placed in the machine and the free ends of the welt are beveled, or batted, at approximately the breast line and are then tacked to the insole. The shoe is held in position for the bi'ittingoperation by'a pair of supports which bear against the upper and project; into theWelt crease under the ends oi? the welt and across the heelseat. These supports do not'always hold the shoe with sufficient rigidity to receive the impact of the tacker mechanism and often the Welt ends are improperly tacked .to the insole. The shoe supports are actuated by a foot treadle to last in the upper as well as POST, tion the shoe. I v

It is desirable to make the operation of the jack automatic with the operation of the machineand to avoid extra manipulations of thefshoe when using a jack. Accordingly, another feature of'the invention contemplates the provision in a machine of the character indicated having supports for positioning a shoe, of a jack, andmeans controlled by an actuation of the supports to lock theiack in a rigid supporting position.

Other features of the invention relating to certain devices, combinations and arrangements of parts hereinafter described and claimed, which possess advantages of simplicity of construction and ease in manipulation, will be apparent to those skilled. in theart.

The preferred embodiment of the invention is illustrated in the accompanying drawings in which;

. Figure 1 is a side elevation showing the jack'in its active position as applied to a welt butting and tacking machine; Fig.2 is a detail showing the last pin at the upper endof the jack; and Fig. 3 is a horizontal section taken on the line 3--3 of Fig. 1.

Theportions of the welt butting and tack ing machine shown in Fig. 1 are in all respects the same as shown in the United States Patent to E. E. vVi11kleyf0r a machine for operating on shoe bottoms, Serial No.

1,242,503, granted October9, 1917. In this machine the shoe is positioned and lasted by means of a pair of supports or shank lasting plates 10. which are moved toward and from one another about a vertical axis by means of a bell-crank 12 connected by a trcadlcrod 14. with a foot treadle 16. The

foot treadle is normally held in an elevated position by'means of a spring 18 which is connected'between the treadle and the ma chine column 20. The trcadle is depressed by the operative to position the shoe for the Welt butting and tacking operations, and upon releasingthetreadle the spring 18 automatically raises the treadle rod and opens the supports to free the shoe. After the shoehas been positioned under the supports, a movement of the hand lever 22 willshift a clutch to operate the welt butting knives and the tacker mechanism 24:.

To hold the shoe firmly and;provide a rigid, impact supporting position, the shoe is supported upon a jack and the jack is rigidly locked during the welt tacking or analogous operation.

The shoe supporting jack consists of a spindle section 26, an adjustingsection 28, and a locking section 30. These sections are telescopically mounted in one another and.

all swing as one piece about a pivot 32 on a bracket 84 mounted near the base of the ma chine column. A last pin 36 (Fig. 2), is pivotally mounted at the top of section 26, and this pin is normally held in central position by means of a spring pressed pin 38 which engages a V-shaped notch 40 at the bottom oi the pin. The lower end of the spindle section 26 is slidably mounted in a yoke 42 on the upper end of the adjusting section 28 and is threaded to receive a hand wheel hi. By this means the jack maybe adjusted for diilerent sizes of lasts and to vary the pressure exerted upon the supports. The lower end of the adjusting section is slidingly mounted in a bore 46 of the looking section 30, and a spring 4L8 is interposed between the end 01' the adjusting section and the bottom of the bore 46. The relative movement of the

sections

28 and 30 is limited by means of a transverse pin 50 in the lower end of the section'28 which works in longitudinal slots 52 in the section 30. The lower end of the locking section is provided with a stop 54 which strikes against the machine column to limit the outward swinging movement of the jack about its pivot 32.

lVith this construction a lasted shoe may be placed on the last pin 36 and swung over under the supports 10 and heel seat gage 56. The spring l8 presses the shoe up against the supports 10 and gage 56 to accurately locate it in position for the opera tion of the tools. The gage 56 vertically positions theshoe and acts to receive the pressure of the spring 48 so that only a slight. pressure is exerted upon the sup ports 10.

After the shoe is positioned under the supports "and gage by the pressure of "the spring &8, the jack is rigidly locked in this position so that the shoe will not move under the impact of the tacker mechanism or other shoe bottoming tool. The lock for the jack consists of apla-te 58pivotally connected to the upper portion of the locking section 30 and surrounds the lower end of the adjusting section 28. The lfreeend of the locking plate is engagedon its upper side a spring 60 andon its under side by afplunger 62,"the latter being slidably mounted in the "lockingxsection. The plu'nger 62 is connected by means of a tu-rn'bucra se witk-the treadle 1 16, By-means of t s senstri ti 'ms i m ne t. f t m tlle" to "operate the supports and "p'ositionthe shoe will draw the plunger 62 down, which will permit the spring 60 to move the lockingplate down about its pivot. The looking plate has a pair of gripping edges 66 (dotted lines in Fig. 1) which, when the plate is moved down, bite into the section 28 and lock, it from vertical 'movement. lVhen thetreadle is released for the removal of the shoe, the spring 18 will force the plunger 62 up and move the locking plate into a position of release, asshown in Fig- 1. When 'the'plate 58 is in this posi tion, the jack may be drawn out from under the supports 10 and gage 56 by depressing it slightlyagainst the spring iS. The locking and unlocking of the jack" is thus automatically accomplished by the opera: tionof the machine, and the use ofsuch a j aek for supporting the lasted shoe requires noextra time.

While theinventionhas been illustrated and described as applied to a welt butting.

and tacking machine,it should be distinctly understood that it is not limitedinwits application tothis type of machine, but may be used in connection with other machines for operating on shoe bottoms.

The nature and scope of the present inventionhaving been indicated and the preferred embodiment of the invention havi'ng been specificallydescribedpwhat is claimed shoe, mechanism to actuate-the supports to position the shoe, means for locking the jack in active position, and means controlled by said mechanism'to unlock the jack.

4.111 a machine for operating on shoe bottoms provided with-tools for delivering blows upon a shoe, supports for position.- ing the shoe, a jack :for the shoe, means carried bythejack to clamp the shoe against the supports when it is placed in an operating position, mechanism -to;actuate the sup portsto position the shoe, and means for locking the jack in anfimpact supporting position controlled by said actuating -meehani'sm.

.110 supports for positioning a shoe, a jaelrfor an 5. Shoe holding mechanism comprising supports for positioning shoe, tz eaclle' operetcd means for actuating the supports, a jack for supporting the shoe. having aiast pin section, an adjusting section and a locking section all relatively movable, means for 5 relatively adjusting said last pin and adjustin sections, a spring mounted between the ac usting and locking sections, a lock on the locking section for engaging the adjust-' ing; section, and means connected with the 7 treadle, for rigidly locking the adjusting 10 section to the locking section upon an operation of the treadle to position the shoe.

EDWARD ERICKSON.

floplel of this patent my be obtained for live cents each, by addressing the "Commissioner of latente,

- walhinzton, D. c." i