GB2122476A

GB2122476A - A holder for a dustbin or like container

Info

Publication number: GB2122476A
Application number: GB08101722A
Authority: GB
Inventors: Nicholas Russel Holland
Original assignee: JELBERT GEOFFREY RONALD
Current assignee: JELBERT GEOFFREY RONALD
Priority date: 1980-12-30
Filing date: 1981-01-21
Publication date: 1984-01-18

Abstract

A holder or retainer for a dustbin or like container is disclosed. The holder comprises a retainer part (11) in the form of four upright resilient arms (13) projecting from a base frame which is pivotally mounted on a support part (16) which may be in the form of a heavy base or a probe for insertion into soft ground. The upright arms (13,14) of the retainer part are preferably formed in pairs as U-shape resilient clips mounted with their bight portions (13a, 14a) orthogonal to one another. <IMAGE>

Description

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Claims

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SPECIFICATION Method of heat setting a lasted shoe upper This invention is concerned with a method of heat setting a lasted shoe upper.

Heatsetting is an operation performed in the manufacture of shoes to hasten shape retention of a lasted shoe upper so thatthe time which the shoe has to remain on the last can be reduced. Heat setting relieves the stresses set up in the upper during lasting but it must be ensured thatthe heat setting process does not lead to the upper shrinking. In orderto relieve such stresses, the lasted shoe upper is conventionally conveyed through one or more chambers in which it is subjected to heat or moisture or both heat and moisture simultaneously. Moisture serves to prevent moisture loss from the upper such as may lead to shrinkage.

In carrying out a heat setting operation, it will be appreciated, the size of the apparatus used will depend to a great extent upon the number of shoes to be accommodated in it at any given time, and this in turn will depend upon the amount of time taken for the shoes to achieve the required degree of heat set as they passtherethrough. Furthermore, the large the apparatus, the greater the amount of air which has to be used, and consequently the greaterthe amount of energy consumed not onlyfor blowing the airabout the apparatus but also for heating it and supplying it with moisture, where appropriate.

It is therefore the object of the present invention to provide an improved method of heat setting a lasted shoe upper wherein the time taken for producing a desired degree of heat set is achieved more quickly than has previously been the case, while at the same time ensuring thatthe moisture content of the shoe is adequately maintained during the heat setting operation.

The invention thus provides a method of heat setting a lasted shoe upper wherein air at a temperature of 1 25"C and with a dew point of the order of 60"C is directed on to the shoe upper with a velocity, at the surface ofthe shoe upper, of 10-20 metres/sec. fora period of 1.5 to
2.5 minutes.

It has been found that, using the above parameters, an adequate degree of heat set can be achieved over a wide range of upper materials.

It will also be appreciated that the more closely the air can be directed on to the shoe upper, the more efficient the heat setting operation becomes. At the sametime, however, directing the air locally on one part of the shoe upper has to be avoided if overheating and consequent damage to the shoe upper isto be minimised. Consequently, therefore, in carrying out the method in accordance with the invention, preferablythe shoe upper is moved past air inlet apertures by which air is directed as aforesaid thereonto, the shoe, as it is so moved, being held with its longitudinal centre line spaced at a distance of 6 to 20 cms from each aperture, measured along the centre line of such aperture. More particularly, the longitudinal centre line of the shoe is preferably spaced as aforesaid from each aperture bya distanceof8to IOcms.

Using one convenient construction of apparatus for carrying out the method in accordance with the invention,the shoe is in fact moved in a lengthwise direction past a plurality of apertures arranged at opposite sides thereof. Furthermore, preferably in such a case the air is directed through the apertures at an angle to a vertical longitudinal plane ofthe shoe.

There now follows a detailed description,to be read with reference to the accompanying drawings, of one method in accordance with the invention, hereinafter called the "illustrative method". It will of course be appreciated that the illustrative method has been selected for description merely by way of exemplification of the invention and not by way of limitation thereof.

In the accompanying drawings:- Figure lisa perspective view of an apparatus for carrying outthe illustrative method; Figure 2 is a front elevational view partly in section, on a larger scale than Figure 1, of the apparatus of Figure1; and Figure 3 is a plan view of a portion of the apparatus of Figure 1 with parts broken away.

The apparatus for carrying out the illustrative method comprises a supporting framework4 (Figure 2) supported by four legs 6 and enclosed by sheet metal panels 8along its sides and its ends. At its front the framework 4 has a forward extension 10 supporting a roller 12 (Figure 2) and at its rear a rearward extension 18 supporting a roller 17. Four conveyor belts 14 pass around the rollers 12,17, and a motor (not shown) supported by the extension 18 drives the roller 17. The upper surface of each belt 14 extends along the uppersurface of a metal plate 20 (Figure 2) supported bythe framework 4. Each plate 20 is bowed downwards towards its centre (as shown in Figure 2) to assist in maintaining a lasted shoe upper in an upright condition as it passes therealong.The belts 14 and plates 20 have circular holes 1 6therein so that air can be sucked therethrough.

The extension 10 provides a loading station for lasted shoe uppers and the extension 18 an unloading station. Between the extensions the belts 14 each pass through a substantially enclosed channel 24. In the apparatusfoursuch channels are provided, the conveyor belts 14 serving to convey lasted shoe uppers longitudinally along the channels 24. Each channel 24 is of such a width that a lasted shoe upper can only pass along the channel 24 eithertoe or heel foremost.

The channels 24 are formed between eight longitudinally extending metal plates 26 (Figure 2) which are supported bytheframework4. each plate 26 has, adjacentthe belt 14, a vertical lower portion 28 and these, either in pairs or in combination with two vertical plates 32 (see Figure 2), define vertical air passages 30. Each plate 26 also has a further portion 34 inclined inwardly towards the centre ofthe channel 24, and each inclined portion 34 has a row of circular air inlet apertures 36therethrough which communicate with the air passage 30. these air inlet apertures 36 are arranged along both sides of each channel with their centres at a distance of 8 cms measured, normallyto the portions 34 of the plates 26, from a plane extending centrally between the plates 26; distances in the range of 6 cm to 20 cms have been