Patent GB-190406129-A (GB)
Title: Improvements in or relating to Machines for Making and Inserting Protectors for the Soles and Heels of Boots and Shoes and other Articles.
Inventor: BOULT ALFRED JULIUS
Filed: 1904-03-12
Granted: 1905-03-09
Abstract: 6129. Boult, A. J., [United Shoe Machinery Co.]. March 12. Bending; shearing; stamping.-Relates to a machine for making tubular protectors and driving them into boots, shoes, and other articles, the several features of the invention being also applicable to machines which perform only one of these operations. Figs. 3, 6, 14, 18, and 19 illustrate one form of the machine, the main shaft B of which is driven and controlled in the manner described in Speciificaton No. 12,882, A.D.1897, [Abridgment Class Boots &c.]. The horn supporting the shoe is periodically depressed, to allow the feeding of the work, by a pawl connected to a red b<19>, Fig. 3, which is vertically reciprocated through an arm C<10>, rockshaft C<4>, and another arm C<6> by a cam-groove in a gear-wheel B<21> driven by a wheel B<20> on the shaft B. This mechanism, however, forms no part of the present invention, and may be replaced by any of the well-known mechanisms usually employed. When the horn is lowered, the shoe is fed thereon by a feed-wheel a, intermittently rotated by an adjustable, spring-controlled lever a<1>. The strip of material from which the protector is formed is introduced into the machine through a guide e<1>, Fig. 6, and between feed and pressure rollers e, e', which are geared together so that they move in unison and are rotated by the toothed end of a lever e<9> actuated by the engagement of a spring - controlled roller e<12> with a cam on a block B<22>, preferably formed in one with the wheel B<21>. The strip is fed forwards over a spring f<6>x until it bears against a finger 16 depending from a block f <1>, which is adjustably secured to a verticallymovable slide-block f<5>. This block is interlocked w i t h a horizontallymovable slide f<6>, which is actuated in one direction by a cam and roller from the block B<22> and in the other by a spring. The block f<1> carries an inside former f, shaped as shown in Fig 19, and also a finger 16<x>, which forms one member of a cutting-mechanism for the strip e'. The other member is former by a corner 10, Fig. 18. of one d' of the two parts d<2>, d<3> which constitute an outside former, these two parts being respectively secured to the inner ends of carriers c, c<1>, mounted in ears b<13> bolted to the forked lower end b<12> of a driver guideway b<2>. The carriers are toothed at c<2>, c<3> respectively, the teeth being engaged by pivoted sector levers c<8>, c<4> actuated by cams and rollers from the block B<22>. When the strip reaches the stop 16, Fig. 6, after passing through guides 14, Fig. 18, in the outside former, the parts d<2>, d<3> of the latter begin to separate, and the slide f Fig. 6, pushes the block f<1> forwards, causing the cutting-mechanism 16<x>, 10 to sever a blank from the strip e<1>, which blank rests in, and is prevented from falling by, grooves 15 of the outside former. The inside former f then meets the blank and forces it between in-turned lips 17, preferably formed integral with the parts d<2>, d<3>. The latter then commence to approach each other, so that the blank is wrapped around the former to form a protector p of the shape shown in Fig. 14, which is held under compression by the inner sides of the walls d' of the outside former. The camfaces on the blocks B<22> are arranged so that two protectors are made at each revolution of the block. Figs. 21, 22, 28, and 34 show another form of machine, in which a continuous strip e<1> of protector-forming material is automatically fed forwards, through an adjustable amount, by means of a spring-controlled feed-clamp 49 actuated by a swinging spring-controlled lever from a cam on the main shaft 45. During the retraction of the feed-clamp, the strip is held by the slit end of an adjustable spring-controlled plunger working in a barrel 67, and actuated by a cam and lever from the main shaft. The inside former f<x>, which also acts as a guide for the strip, is fixed in a piece 42 which connects forwardly-extending arms 41 of the side frames 40. The outside former consists of two jaws d<2x>, d<3x>, Fig. 28, mounted on levers 77 pivoted to a slide 79, which works in dovetailed guides in a table 44, and is held by a spring in contact with an adjustable spring-controlled cam 81 on the main shaft. This cam is grooved so that, after it has advanced the slide 79 far enough to enable the ends of the jaws d<2x>, d<3x> to press the end of the strip e<1> against the rear surface of the inside former f<x>, it has a period of inaction while an adjustable cutter 16<xx>, Fig. 22, actuated by a cam and lever from the main shaft, severs the strip against the jaw d<3x>. The cam then advances the slide another step so that the severed portion of the strip is bent partly round the inside former, after which it has another period of inaction while the jaws d'x, d<3x> are closed, causing their in-turned lips 17<x> to complete the bending of the strip into a tubular form. This movement is effected, against the action of a spring 88, by the engagement of wing cams 89, located at opposite sides of the cam 81, with the ends of the levers 77. The protector thus formed is then driven into the work.