US1165818A - Machine for taking shoes off the last. - Google Patents

Description

F. WALZ.

MACHINE FOR TAKING SHOES OFF THE LAST.

APPLlCAIlOH FILED NOV.3,1914.

Patented Dec. 28, 1915.

8 5 e i W UNITED @IAIEfii PATIENT FRIEDRICH WALZ, OF BbBLINGEN, GERMANY, ASSIGNOR TO THE FIRM OI? FOBT'UNA- WERKE, SPECIALMASCHINENFABRIK, G. M. B. H., 0F STUTTGART-CANNSTATT,

GERMANY.

Specification of Letters Patent.

Pat .nted Dec. 2&1t'itil5.

Application filed November 3, 1914. Serial No. 870,045.

To all whom it may concern Be it known that I, FRIEDRICH VVALZ, residing at Boblingen, lVurttemberg, Germany, mechanical engineer, have invented certain new and useful Improvements in Machines for Taking Shoes Off the Last, of which the following is a specification.

My invention relates to mechanical. appliances used in. the manufacture of shoes and more especially to machines for taking shoes or boots off the last.

The object of my invention is to provide a machine of this kind which is more simple in construction and therefore less expensive than the machines hitherto used. Its main advantage, however, is its great simplicity of operation.

In older machines of this kind the last is held by a pin adapted to be spread. while the shoes is taken off the last by aid of spoon shaped movable rails which are inserted between the last and the shoe. Owing to their intricate construction these machines are comparat"'ely expensive and, moreover, show certain disadvantages which tend to render their operation rather difiicult. One of these disadvantages is caused by the circumstance that two separate treadles are necessitated for moving (closing) the pincer like last pin and for mserting the spoon shaped parts. Another disadvantage is caused by the circumstance that owing to the last pin being spread in the position of rest the last cannot be put on directly, it being necessary, first of all, to close the pin by aid of its treadle. Another treadle is provided for inserting the spoons.

lVith the machine according to my invention the last may be put upon the pin with out any preliminaries, and the shoe is held fast and the spoons are inserted by means of a single treadle. In view of this simple mode of operation there is no need for taking special care in operating it. As a consequence thercof the new machine makes it possible to wok much quicker than before and therefore its output is considerably greater. Its simplicity in construction makes it particularly adapted for purely mechanical Work.

In the accompanying drawings I have .shown my invention in the form which is now preferred by men In the drawings Figure 1 is a front view,

partly in vertical section, of a machine ac- Within the cylinder (2 a double rail 7) guided, said rail being acted upon by springs e and resting with a catch (Z against a fixed part. Rail b rarrics a last pin y forming the free end of a pincer having its legs it connected by means of links 2' with a tie rod k. This tie rod is operated by n Bans of a treadle (not shown) in such a way that on the rod 7!: being shifted downward the legs h of the pincer will swing around pin Z and the pincers and pin y will be opened (F se- The rod in is provided with a stop m. (Fig. 2) when the rod is shifted downward, this stop meets part 0 of the double rail 5 and auses it to move downward also against the action of the springs c. It will be seen therefrom that rod is, rail 1), pincers f with pin y/ and the last fixed on said pin are lowered together, while the spoons z pivoted to the cylinder (0 at p and inserted between the last and the boot or shoe upper will remain stationary and therefore take the shoe off the last.

A double armed lever r oscillating around a .pivot pin 8 is provided for setting the spoons Q according to the breadth of the different lasts. Lever r is moved by means of a hand wheel t or the like acted upon by a spring and held in position by a claw cou-- pling u. The spoons q are acted upon by a spring 1).

In the operation of this machine the last carrying the boot or shoe is put upon the pin g and the treadle is pressed down, thereby opening the pincer-s f. It will be seen from the foregoing description that the pin cerlike pin 9 is closed in its position of rest thus permits the last to be set up Without any preliminary manipulation of the machine. It then follows that by depressing but a single itoot lever, the pin 9 is opened to engage the last and lowered relatively to the spoons g which take the shoe oil the last, which can then be removed.

The downward movement of rod it may be limited. a stop.

'1: claim:

1. In a machine for taking shoes off the last, thecombination with spoons pivoted on fixed axes of a last carrying pin in two parts which normally remain together in a position of rest, and means for opening said pin to engage a shoe 2 nd moving said shoe relativel '0 said spoons to remove the last. 2. in a nen-hine for taking shoes oil' the last, in combination, a last carrying pin in two parts adapted to be spread apart, means for, pressing the parts of said pin close together while the machine is not in use, a pair of spoons adapted to be inserted between the last ai'ul a shoe on said last and a single treadle adapted to cause the spoons to be inserted in the shoe.

in a machine for taking shoes off the last, in combination. a last carrying pin in we parts adapted to be spr ad apart, means .or spreariling apart the parts of said pin and two parts adapted to be spread apart, means for spreading apartthe parts of said pin and for shifting them downward, a stationary pair of spoons arranged to be inserted between the last and a shoe on said last ane means for regulating the distance between said spoons according to the breadth of the last.

5. In a machine for taking shoes oii the last, in combination, a last carrying pin in two parts adapted to be spread apart, means for spreading apart the parts of said pin and for shitting them downward, a stationary pair of spoons pivoted to the machine structure, a spring arranged to draw said spoons toward each other and a double armed lever between said spoons arranged to spread the spoons apart.

6. In a machine for taking shoes off the last, in combination, a last carrying pin in two partsadapted to be spread'apart, means for pressing the parts of said pin close together while the machine is not in use, a. pair of spoons arranged to be inserted between the last and a shoe on said last and a single treadle ar anged to spread and shift the pin downward and to ause the spoons to be inserted in the shoe.

In testimony whereof I have allixed my signature in presence oi two witnesses.

FRIEDRICH lVALZ.

"itnesses Axros Annrz. PAULINE .ldii'LLER.

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