US1896017A

US1896017A - Method of smoothing shoe parts

Info

Publication number: US1896017A
Application number: US418943A
Authority: US
Inventors: Sandt Julius
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-01-19
Filing date: 1930-01-06
Publication date: 1933-01-31
Anticipated expiration: 1950-01-31

Description

Jan. 31, 1933. J. SANDT METHOD OF-SMCOTHING SHOE PARTS Filed Jan. 6, 1930 2 Sheets-Sheet l Jrzverztor Jan. 31, 1933. J -r 1,896,017

METHOD OF SMOOTHING SHOE PARTS Filed Jan. 6, 1930 2 Sheets-Sheet 2 J/werztor:

Patented Jan. 31 .1933

UNITED STATES? JULIUS sum, or nnkasmrs, GERMANY METHOD or smoorn rne snon rears Application filed January 6, 1930, Serial No.

This invention relates to a method of treating shoes, parts of shoes, in order to remove folds and unevenness in the leather and to obtain an exact fit on the last or the like. This is obtained accordin to the invention by blowing a current of ot air of about 200 or more centigrades on the uneven parts of the leather. Hereby the leather becomes smooth by shrinking of its surface without impairing its elasticity or its durability. In a similar way the folds of the leather-cover of wooden heels at once disappear as they are blown by hot air. The new method makes it also possible to level and to iron shoes without lasts or another inner support.

It is known to treat shoes with a sad-iron for the same purpose. But the sad-iron cannot enter into the grooves of the folds as does a current of hot air. On the contrary it lies only on the folds; Besides it prevents the observation of the work-piece and the work piece must be supported by a jack in order to be worked upon by an iron. The use of an open flame would be troublesome and danger- 5 ous and would hinder the observation. In

contradistinction a dirigible current of hot air is easy to handle and allows the observation of the disappearing of the folds during the treatment and prevents an overheatingof the leather.

The drawing shows a preferred embodiment of a device used for executing of the method.

Fig. 1 shows a section of the device along its middle plane and a diagram of the wiring.

Fig. 2 showsthe whole arrangement of the device with the means for cooling of the guide of the shoe in section.

Fig. 8 shows another arrangement for the cooling of the margin of the sole.

A pistol 1, see Fig. 1, is provided with a heating-body 2, the front-end of which is directed to a nozzle-like opening 24 for discharging the air, while the rear end is easily accessible by a removable cap 3. In the cap 3 is fastened a mandrel 4supporting the heating-body 2. ,A casing 4' prevents the radiation of the heat of the heating-body 2 onto the wall of the pistol and divides the interior of the pistol in a proper heating-room 20 and 418,943. and in qermany hnuary'la, 1928.

a re-heating ch mber 21 or the fresh air whlch enters the pistol-stock 6 through the metal-hose ,5. The fresh air is introduced into the pistol lby' a ventilator {F.see Fig. 2, through'a flexible hose 5. .As .seen from the .dlagram the heating and the supply of air can be simultaneously a controlled by .the switchbutton 8. The ,electric-leads'are securely embedded in the ducts 5, .6 for the compressed air. I In order to protect the margin of the soles which are polished with wax against the influence of the hot air, the heating-piston may be provided according to Fig. 2 with a cooled gu dellqfor the margin of the Sale. The gu de has ,theforni' of a roll rotatable on the axis 12 on the swinging lever 9. The lever is capable of beingswungabout the axis 10 on the p stol-body and is pressed against the margin of the sole 15 by the spiral spring 13. 1.

The prolongation 9 of the lever 9 abuts against the dog 1' of the pistol-body and limits 1n this way the swinging-movement.

At the lower end of the pistol-stock is branched-off the curved pipe 14 which sup phes the cooling-air to the guide-roll 11. If another part of the upper leather is toobe levelled the swinging-lever 9 with the roll 11 may be withdrawn from the nozzle of the heating pistol by means, of the handle 11.

The device for protecting the polished solemargin of the work-piece 15 may also be arranged separately from theheating-piston according to Fig. 3.. With this arrangement a frame 16 is attached to the work-table, and ,85 the fresh airis supplied to the guide-roll 17 by means of the metal-hose 19 through the closed hollow-space 16 of the frame. The work-piece may now be guided along independently from the position of the heating 5 pistol on the roll 17 rotatable on the bolt 18. The sole lies on a table-like arm 22 of the 'frame 16.

object to be levelled, and with the other hand 1, 7

he directs the current of hot air against that part of the leather which is to be smoothed. The current of hot air may be controlled with regard to its velocity and to its temperature. 5 Of course the device may be constructed in a different manner. For instance the ventilator may be arranged in the pistol itself. The discharge-opening of the pistol must in every case have the form of a nozzle. The same ventilator may also supply air to several pistols.

What I claim is: 1. Method of smoothing folds or uneven parts of shoes, comprising the step of blow- 1 ing a jet of hot air against the parts to be treated while'keeping the latter in a visible position.

2. Method of smoothing folds or uneven parts of shoes, comprising the step of blowing a jet of air of more than 200 centigrades against the parts to be treated while keepin the latter in a visible position.

3. Miethodof smoothing folds or uneven parts'of shoes, comprising the steps of pro- 2 ducing compressed air, heating the com pressed air, anddischarging a jet of the heated compressed air against the part to be treated while keeping the latter in a visible position. In testimony whereof I afiix my signature. JULIUS SANDT.