US 2662964 A
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Description (OCR text may contain errors)
Dec. 15, 1953 E. H. slMMs 2,662,964
APPARATUS ADAPTED FOR HEATING SHOES Filed May 26, 1950 3 Sheets-Shea?I 1 Inventor Ernest H Simms Dec. l5, 1953 E. H. slMMs 2,662,964
APPARATUS `ADAPTED FOR HEATING SHOES Filed May 26, 1950 3 Shee' .s-Shee-rl 2 Inventar Ernest H Simms Dec. l5, 1953 E. H. SIMMs 2,662,964
APPAM'I'US ADAPTED FOR HEATING SHOES Filed May 26, 1950 3 Sheets-Sheet 5 [n1/enfin* -E'mes H Simms Patented Dec. 15, 1953 APPARATUS ADAPTED FOR HEATING SHOES Ernest Harry Simms, Leicester, England, assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application May 26, 1950, Serial No. 164,357
Claims priority, application Great Britain July 9, 1949 sclaims. (01.219-35) This invention relates to improvements in or relating to apparatus adapted for heating shoes, the word shoe being used herein to denote outer footwear generally whether completed or only partially-completed; the invention will be hereinafter described with reference to heating the bottoms of shoes which have been lasted but which have, as yet, no outsoles.
At the present time a considerable proportion of the shoes being manufactured are cementsoled shoes, that is to say shoes which have leather outsoles secured in place upon their shoe bottoms by cement rather than by stitching or metallic fasteners. customarily a cement-soled shoe is made by a process in which both the outsole and the shoe bottom are iirst roughed, for example with a wire brush, and are then given marginal applications of pyroxylin solution, the solvent being thereafter allowed to evaporate to leave marginal coatings of pyroXylin on the two workpieces. Subsequently, at a convenient time in the shoe manufacturing process, a suitable activator, comprising a volatile solvent for the pyroxylin, is applied to the outsole and the outsole and shoe are, very shortly thereafter, brought together and placed under pressure in a cement sole press. The activator brings the pyroxylin coatings on the outsole and shoe bottom into an adhesive condition and the outsole and shoe are held together under pressure in the press until the solvent has largely evaporated and a suiiiciently firm bond between the outsole and the shoe bottom has been produced to allow the work to be removed from the press.
In making a cement-soled shoe by the process inst referred to the period of time for which the outsole and shoe must be held together under pressure is one factor which determines the number of pairs of shoes which a cement sole press is capable of handling in a` given time, and in order to shorten this period Vand so increase the capacity of the press it has been a common practice to subject the outsole to moist heat, immediately prior to application of the activator,
with a view to hastening evaporation of the sol- 2 sole carrying a marginal coating of cement to which an activator has been applied.
An apparatus illustrative of the invention is hereinafter described in detail, this illustrative apparatus comprising an enclosure having a movable hood carrying a work support in the form of a horizontal open-mesh wire grid upon which lasted shoes may be positioned shoebottoms downward. Beneath the work support are situated six electric radiant heat lamps which direct heat upwards through the support towards work so positioned.
The wire grid forms the floor and the hood forms the ceiling of a compartment in which six shoes may be accommodated side by side, the hood having a top plate provided with louvres. A number of baffle plates are arranged to keep glare from the lamps from the operators eyes when he is positioning a shoe in the nest or removing a shoe therefrom. By arranging the apparatus in such a way that shoes are inserted bottoms downward the work of the operator is facilitated in that he does not need to position the shoes on last supports or the like; on the other hand this makes it necessary to have the lamps beneath the shoes, and the lamps are, in this case, liable to become somewhat obscured, after a time, by small pieces of waste matter from the work (including, for example, leather dust resulting from roughing), and with this in mind the apparatus is so arranged that the work support, hood and bafile plates can be swung upwards as a whole about a hinge to allow irse access to the lamps for periodical cleaning.
The above and other features and advantages of the present invention will become more clear from the following description, to be read with reference to the accompanying drawings, of the said illustrative apparatus; it will be realized that this apparatus has been selected for description by way of example and not of limitation of the invention.
In the drawings,
Fig. l is a perspective view of the illustrative apparatus;
Fig. 2 is a view of the apparatus in section by a vertical plane extending from front to rear of the apparatus; and
Fig. 3 is a view similar to Fig. 2 but to a larger scale, an upper part only of the apparatus being shown.
The illustrative apparatus comprises a body l i adapted to upon the and a hood or cover i3 hinged to the body i! by a horizontal hinge l5 at the back of the apparatus. Normally the hood i3 occupies a position shown in Figs. 1 and 3, but it may be swung upwards upon the hinge i5 to an upper position shown in Fig. 2, such position being deiined by engagement of pins il', iixed in the body H with ends of slots it in links :2i pivoted to the hood I3 at 23; only one of the pins Il', slots i9 and links 2l is shown, viz., in Fig. 2, at the right hand side of the apparatus, the other being at the left hand side.
The body i! is a riveted sheet metal structure and comprises two vertical side plates 25, 25 one at the left of the apparatus and the other at the right. Each side plate 25 is for the most part iiat but has a forward margin 27 curved round through a right-angle toward the center of the apparatus and terminating at a vertical edge 25 and a rear margin bent round rather more abruptly.
The edges 29, 9 are bridged by a rectangular sheet metal front-plate 3l an upper horizontal. edge 33 of which is continuous with upper horizontal edges 35, 35 of the plates 25, 25, while the rear margins of the plates 25, 25 are bridged by a backplate 3l, situated behind the plate 3l and having the hinge l5 xed thereto at its upper edge on a level with the edges 33, 35.
Lower horizontal edges i the plates 3i, 3l are bridged by a perforated sheet metal grille a short distance above which lies a second grille lil, the grille 35 being wholly horizontal but the grille 4I being horizontal save for a bentup rear portion i3 as shown in the drawings. The grilles 3S, t! are xed to narrow shelves riveted to the plates 25, 25.
Beneath the grille 39 each plate 25 is bridged from front to rear by a vetrcal plate 45, the arrangement being such as to make a hollow frame il at each side of the apparatus; the plates iit do not extend upwards above the grille 39. The plates :i5 are bridged by a curved plate iS which runs from floor level up for a short distance at the front of the apparatus and then curves over to run horizontally between the plates d5 beneath the grille 39. It will be seen that the upper parts of the plates 25, the frontplate Si, back-plate 37 and grille 4| provide a housing 59 having an aperture at the top and supported by the frames 41.
Fixed to the grille di and situated within the housing 5d are lamp holders 5i for six electric lamps 53, three rearmcst lampholders 5l being iixed, in a row extending from side to side of the apparatus, to therportion of the grille 4l and three front lampholders 5i being xed to its horizontal portion. Each lamp 53 is a 250 watt gas nlled lamp of a type designed to emit a substantial proportion of radiant heat rays, and has a circular filament 55 and an internal silvered renectorsuriace 5l, the arrangement being such that radiant heat from the rearmost three lamps is mainly directed forwards and upwards, in the direction of the arrow A (Fig. 3) while radiant heat from the front three lamps is mainly directed vertically upward, in the direction of the arrow B (Fig. 3). Power for the lamps 53 is controlled by a mainswitch 58 (Fig. 1) on the frontplate 3l.
When the hood I3 is in its normal position a narrow skirt portion 5l thereof lies within the housing 5@ and rests upon a narrow shelf 63 within the latter, a shoulder 65 of the hood at the same time resting upon the edges 33, 35. The hood i3 is a riveted sheet metal structure and comprises side plates 6l, 5'! which in said nor-1 mal position are continuous with the side plates 25, 25 lying immediately above the latter. Thus a forward margin of each plate 6'. is curved round through a right angle towards the center of the apparatus and terminates at a vertical edge ii. The edges SS, ES are bridged across the front of the apparatus by a narrow metal strip 'il and also by a forward portion of a sheet metal top plate l, which latter is curved down forward and terminates in a straight horizontal edge 75. The top plate i3 bridges the plates ii'i, El across the top of the apparatus and curves down round the back of the apparatus to the hinge i5. The top piate 'i3 is provided with sis; transverse louvres l?! of curved cross-section arranged one behind the other (see Figs. 2 and 3), ve of which are of curved sheet metal secured to the plates l, Si at their ends and the other (the rearmost one) of which is constituted by a curved portion of the plate i3 itself. Adjacent the bottom oi each ci" the edges is provided a forwardly-andrearwardly extending channel member ii), the two members 'it providing a guideway in which is mounted a platform-like work support di, the latter taking the form o a rectangular horizontal open-mesh wire grid with metal binding at its periphery. Normally the supp-ort 8l occupies a position in which a forward edge B3 thereof extends across between the edges ed above the strip ii, the edges 59, EQ, i5, 83 defining a rectangular opening 85. Eiongated rectangulaibaflle plates 8l, $9, Si are xed at the opposite ends thereoic to the side plates ii'i.
When the apparatus is in operation six shoes are inserted through the opening 85 and positioned shoe-bottoms downward side by side upon the support 23! in the manner of the shoe S of Fig. 3, and the lamps 53 direct heat upwards through the support i?! onto the shoes in the directions indicated by the arrows A and B. About a minute and a half is long enough for adequate heating of the shoe bottom, but where a shoe has been leit in the apparatus for a considerably longer period, say iive minutes, no damage has resulted.
As will be seen from Fig. 3 the baies d?, 3Q prevent glare from the filaments iid oi the three rearmost lamps from reaching the cperators eyes through the opening 35 when he is positioning shoes upon the support di, the baiiies Sii operating in a similar manner in respect ci te three front lamps. The louvres il substantial escape of glare through the top of the hood i3.
Further, should the lamps 53 become obscured by leather dust from the work, the hood i3, and with it the work support 3l and the Si, Si@ and 9|, can readily be swung upwards as a whole upon the hinge i5 to provide free access to the lamps 53 for cleaning or replacement.
Although I have shown and described invention in terms of one speciic embodiment thereof, it will be obvious to those skilled in the art that many other forms thereof, well as variations in the one described, are possible. i therefore desire that my invention shall not be limited except in so far as is made necessary by the prior art and by the spirit of the appended claims.
Having thus described my invention, what i claim as new and desire to secure by Letters Patent of the United States is:
l. n apparatus of the class described, an en closure comprising a housing formed with an aperture and a cover pivoted to said housing for movement into and out of covering relation with said aperture, said enclosure being formed with an opening for inserting a shoe to be heated, an infrared radiation-passing platform-like work support carried by and beneath said cover for movement therewith from a position in which the support lies horizontally over the aperture to a position in which the support is raised clear of said aperture for providing access to the interior of said enclosure, said support being arranged for receiving, bottom down and between the support and the top of the cover, a shoe inserted through said opening, and a source of infrared radiation disposed in said housing and arranged to radiate through said aperture toward said support` 2. In apparatus of the class described, an er1- closure comprising a housing formed with an aperture and a hood pivoted to the housing for movement into and out of covering relation with said aperture, said enclosure being formed with an opening for inserting a shoe to be heated, a heat-radiation-passing work support carried by said hood for receiving bottom down a shoe in serted through said opening, a plurality of holders for radiant-heat lamps disposed in said housing and arranged to radiate heat toward said support, and vertically disposed bailie plates carried by said hood for intercepting visible radiation directed toward said opening from said lamps, whereby, when said hood is moved out of said covering relation, free access to said lamps is pro vided for cleaning and replacement.
3. In apparatus or the class described, an enclosure formed with an opening for inserting shoes and provided at its top with a hinged, upwardly tiltable hood, a horizontal open-meshgrid Work support carried by said hood upon which support lasted shoes inserted through said opening may be supported bottoms downward, a radiant-heat lamp disposed in said enclosure beneath said support for radiating heat therethrough, and baffle plates carried by said hood ben low said support for intercepting visible radiation emitted by said lamp toward said opening, said plates being disposed in spaced relation providing for radiation therethrough from the lamp to the Support.
ERNEST HARRY SIMMS.
References Cited in the iile of this patent UNITED STATES PATENTS Number Name Date 1,269,648 Ryan June 18, 1918 1,597,137 Garrnan Aug, 24, 1926 1,647,277 Davis iNov. 1, 192'? 1,754,518 Kinnie Apr. 15, 1930 2,184,858 Goodman Dee. 26, 1938 2,249,760 Harrison et al July 22, 1941 2,325,050 Goodwin et al July 27, 1943 2,325,086 Vore July 27, 1943 2,354,658 Barber Aug. 1, 1944 2,373,922 Tetlow Apr. 17, 1945 2,442,407 Gibbons et al June 1, 1948 2,481,384 Blackwell Sept. 6, 1949 2,520,830 Borzner Aug. 29, 1950 FOREIGN PATENTS Number Country Date 410,571 Great Britain May 24, 1934 649,844 Germany Sept. 3, 1937