US2257832A - Machine for operating upon shoes - Google Patents

Description

Oct. 7, 1941. c; M. BAGSH AW 2,257,832

MACHINE FOR QPERATING UPON SHOES I Filed July 6, 1959 '//\/vE/\/ TURL 4? m, I /I Patented Oct. 7, 1 941 MACHDNE FOR OPERATING UPON SHOES Charles Martin Bagshaw, Leicester, England, as-

signor to United Shoe Machinery Corporation, Borough of Flemington, N. J., a corporation of New Jersey Application July v6, 1939, Serial No. 283,000 In Great Britain September 1, 1938 3 Claims.

This invention relates to machines for operating upon shoes and is herein illustrated and described as embodied in a machine for buifing shoes or like articles and for removing the dust which adheres to the buffedsurfaces. In United States Letters Patent No. 2,008,797 granted July 23, 1935, upon the application of Fred Ricks and Charles Turner Jones is disclosed a buifin machine provided with a heel breast scour-ing cone in combination with a device for continuously removing dust from the heel breast surface, this machine having also a pair of bottom scouring rolls of coarse and fine grit respectively mounted on the same shaft above a suction hood which receives the dust given off by the operationof the tools. The machine illustrated herein, except in so far as will later be disclosed, is similar to the machine disclosed in the above identified patent and like that machine is provided with a pair of bottom scouring rolls of coarse and fine grit respectively mounted on the same shaft above a trough shaped suction hood.

It is an object of the present invention to provide an improved machine of the character under consideration. As illustrated herein, the improved machine is provided with a nozzle for releasing a jet of air to blow dust from' a shoe in combination with a support constructed and arranged for movement of the nozzle from a normal out-of-the-way position between the buffing rolls to a convenient operating position. In the illustrated construction the jet is controlled by a valve arranged to open upon movement of the nozzle to operative position and to close upon movement of the nozzle to an outof-the-way position. The nozzle is directed downwardly into the hood and the hood is large enough to receive a portion of the shoe held by the operator away from the tool and to accommodate the shoe in various positions of manipulation. The illustrated dust hood comprises a pair of walls converging at an acute angle, the interior of the hood communicating at a locality adjacent to the vertex of the angle through a small opening to a conduit which may be connected to a suction system.

These and other features of the invention, comprising various combinations and arrangements of parts, will be best understood from the following description of the preferred embodiment thereof, selected for purposes of illustration and shown in the accompanying drawing, in which- Fig. 1 is a view partly in end elevation and partly in section; and

Fig. 2 is a fragmentary front elevation of some of the parts shown in Fig. 1.

The invention is illustrated herein as applied to a buffing machine of the type disclosed in United States Letters Patent No. 2,008,797 above referred to. This machine is provided with a horizontal shaft I0 upon which are mounted a pair of buffing rolls II and I2 having a relatively small space between their adjacent ends and having their abrasive surfaces coated with coarse and fine grit respectively. Secured upon a cross bar I4 of the frame of the machine is a bracket I5 upon which is mounted a dust hood I6 in the form of a trough below the rolls II and I2 to catch dust given off by the. operation of the rolls on the work. The hood I6 has front and rear walls 50 and 52 respectively, and also has a pair of end walls 54, one of which appears in Fig. 1. The walls 50 and 52 converge downwardly at an acute angle to each other; they do not meet at the bottom of the hood, but are separated by a narrow space to provide communication between the interior of the dust hood and an exhaust conduit 40 connected to a suction system. Also mounted upon the cross bar I4 is an upstanding bracket I8 supporting at its upper end a hollow tapered valve plug 20, the interior of which is connected by a rearwardly extending pipe 22 to a supply of air under pressure, preferably at about 50 pounds to the square inch. The axis of the valve plug 20 is substantially parallel to the axis of the shaft I0. Rotatably mounted upon the plug 20 is a sleeve 24, the plug and sleeve having valve ports 32 and 30 respectively andtogether constituting a valve of the type commonly used in gas pipe work. The ports 30 and 32, as shown in Fig. 1, are normally out of register with each other. Extending from the sleeve 24 is an arm 25 which is connected by a depending chain 26 to a treadle 21. A tension spring 28 connected at one end to the bracket I8 and at its other end to a second arm 29 extending from the sleeve 24 tends to rotate the sleeve in a clockwise direction as viewed in Fig. 1, While depression of the treadle rotates the sleeve in the opposite direction.

Rigidly secured to the sleeve 24 and projecting radially therefrom upwardly and forwardly at an angle of about 45 to the horizontal is a pipe 34 which passes through a slot 36 formed in the rear wall dust hood I6. Upon the upper end of the pipe 34 is mounted a nozzle 38, the outlet of which is directed downwardly. This nozzle normally occupies an outof-the-w'ay position between the two rolls H and I2 and as close to the shaft It as permitted by reasonable clearance. The interior of the pipe 34 at the lower end thereof is continuous with the valve port 3t. Depression of the treadle 21 serves to lower the nozzle 36 into a convenient operating position and at the same time brings theport 30 into register with the port 32, thereby opening the valve and supplying air under pressure to the nozzle 38. tending from the sleeve 24 engages a stop screw 42 threaded through a portion of the bracket l8 to limit the upward movement of the nozzle under the influence of the spring 28'and a stop screw 44 also on the bracket it limits the downward movement of the nozzle 38 when the treadle 21 is depressed.

In the operation of the machineashoe-ispresented first to the coarse bufling roll I l and then shifted to the fine buffing roll I2, the nozzle 38 occupying its normal or. out-of-the-way position between the rolls. so as'not' to; interfere withv the rapid movement. of; the shoe from the one roll to the other. After treatment by the-fine roll 1.2, the treadle 21. is depressed to lower-the nozzle 38' to a convenient operating position; The, shoe is then held beneaththe nozzle and partly within the hood IS, being manipulated as may be-required to remove the. dust from all portions thereof, The. hood islarge enough not only to catch practically all of the dust'arising. from the operation ofthe rolls. H: and; L2, but also to receive the. shoe. as the; operator presents it to the nozzle 38.

Having describedmy. invention, what I claim as new and desire to secure by Letters. Patent of theUnited States is:

1. A machine'efor buifing shoes and like articles comprisinga. pair of substantially coaxial bumng rolls covered with relatively coarse and fine abrasive respectively; a nozzle for. releasing a jet of A lug G6 exaeszsse air to blow dust from a shoe, a support constructed and arranged for movement of said nozzle from an out-of-the-way position between said rolls to a convenient operating position, and a valve in said support for controlling the flow of air to said nozzle, said valve being arranged to open upon movement of the nozzle to operating position and to close upon movement of the nozzle to said out-of-the-way position.

2. An apparatus for cleaning dust from shoes or like articles, comprising a hood having a pair of walls converging at an acute angle, an open ing adjacent to'the vertex of said angle adapted to be connected to a suction system, a nozzle above the level of said vertex and directed approximately toward' said vertex for releasing a jet of air to blow dust from a shoe, and a treadle operated mechanism for controlling a supply of air under pressure to said nozzle, said hood having an unobstructed interior space large enough to receive a. shoe. or a portion thereof and to permit manipulation of the shoe to expose all portions'oithe shoe to the jet of air.

3.. An. apparatus for cleaning dust from shoes or like articles, comprising a stationary hollow valve plug adapted to be connected to a source of air under pressure, a valve sleeve rotatably mounted on saidplug, a. conduit secured to and extending from said sleeve. for pivotal movement about the axisof said plug, a nozzle on the free end of, said conduit for releasing a jet of air to blow dust. from a shoe, a spring for normally holding said conduit in an out-of-the-way position, and. atreadle mechanism for moving said conduitinto aconvenient operating position, said plug and said sleeve having parts arranged to admit. air; from the source of pressure to the conduitwhenthe conduit isin operating position and'to close the supply of air to the conduit when the conduitis in its o.ut-0f-the-Way position.

CHARLES MARTIN BAGSI-IAW.

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