US2112600A - Dipping apparatus - Google Patents

Description

G. S. HENDRIE DIPPING APPARATUS March 29, 1938.

Filed Feb. 15, 1956 s Sheets-Sheet 1 ATTORNEYS March 29, 1938. G, HENDRlE 2,112,600

DIPPING APPARATUS Filed Feb 15, 1956 3 Sheets-Sheet 2 'INVENTOR. 6 50/ 5/71 /7077? ATTORNEYS March 29, 1938. G 5 HENDRIE DIPPING APPARATUS Filed Feb 15, 1936 5 Sheets-Sheet Z INVENTOR. 620/ JWZ /VW/Z ATTORNEYS Patented Mar. 29, 1938 UNITED STATES DIPPIN G APPARATUS George S. Hendrie, Detroit, 1Vfich., assignor to Detroit Macoid Corporation, Detroit, Mich, a corporation of Michigan Application February 15, 1936, Serial No. 64,055

5 Claims.

This invention relates to apparatus for dipping articles of hardware, glass and the like in a bath of coating compound in order that a thin coating of the compound will remain on the articles after they are removed from the bath. The invention is more particularly concerned with the articles of hardware such as are used on automobiles and has as its primary object to provide such articles with a coating that will protect them from corrosion, such as rusting or tarnishing when they are made of metal, to protect them from chemical actions which might cause them to decompose or decay and also for decorative purposes.

An important object of the invention is to provide dipping apparatus constructed so that the articles to be clipped may be quickly and easily placed into the apparatus and removed therefrom after the dipping operation. In this connection the invention provides for the handling of the work in groups.

In the use for which the machine is particularly adapted the articles to be handled are door handles, window lifts, etc. for automobiles and the invention further provides a novel support for such articles. More specifically, the work supports include resiliently yieldab-le means for frictionally holding the work during movement through the coating liquid and a further object is to provide means for excluding the liquid coating compound from contact with the yielding means, this being desirable because the coating means would tend to destroy the resiliency of the yielding means.

With the above and other ends in view the invention consists in matters hereinafter more particularly pointed out with reference to the accompanying drawings, in WhiCh Figure 1 is a front elevation of a multiple tank clipping apparatus;

Fig. 2 is a section taken on the line 22 of Figure 1;

Fig. 3 is a vertical section of a rotary work supporting frame;

Fig. 4 is a transverse section of the work supporting frame;

Fig. 5 is a cross section of a work support with an article supported thereon;

Fig. 6 is a section taken on the line 6-6 of Fig. 5;

Figs. 7 and 8 are details of the work support;

Fig. 9 is a section illustrating a modified work support;

Fig. 10 is a section taken on the line 10-49 of Fig. 9;

Fig. 11 is a detail of the said modified work support;

Fig. 12 is a cross section illustrating a work support for another form of article;

Fig. 13 is a section taken on the line l3-l3 of Fig. 12, and

Fig. 14 is a fragmentary elevation of the latter support.

Like characters of reference are employed throughout to designate corresponding parts.

With reference more particularly to Figures 1 and 2 there is shown a fabricated supporting structure composed of vertical elements I and horizontal elements 2 supported thereby. Beneath the horizontal elements 2 and between ad-- jacent pairs of uprights l are provided tanks 3. The horizontal members 2 support reservoirs 4, there being aseparate reservoir 4 above each tank 3. Each reservoir 4 is provided with a conduit 5 leading to its respective tank and a manually operable valve 6 is provided in each conduit.

Rotatably supported in the frame structure, preferably by bearings provided in or on the up rights 2 is a shaft 7. The shaft 7 extends past the entire groups of tanks 3 and is provided with a sprocket 8 on one end. The sprocket 8 represents means for providing a driving connection between the shaft 1 and a motor, the motor and means for connecting its drive shaft to the shaft 7 not being illustrated here because such arrangements are already well known in the art. Loose- 1y supported by the shaft 1 adjacent each tank 3 is a pair of arms 9. The free ends of the arms 9 extend into their respective tanks and rotatably supported in the said ends of each pair is a shaft 10. Keyed to each shaft 10 is a pair of spaced apart disks H and i2 and also a sprocket l3 which is connected to a sprocket M on the shaft 7 by a chain l5.

Loosely connected to each end of eachshaft i0 is an arm 15a having ratchet teeth I6 co-operating with dogs I? supported by the uprights 2. The arms 15a are adapted to support the shafts II] in various positions of adjustment with respect to the tanks 3 as may be more readily seen by reference to Figure 2 and provide a simple and eificient means for holding the arms 9 from fulcruming with respect to the shaft 7 and thereby adapt the device to the handling of different sized articles. In other words, the position of the shaft in may be changed from that shown in Fig. 2, either by elevating it or lowering it with respect to the tank 3 by manually moving the arms |5a While the ratchet teeth I6 are out of engagement with the dogs 11.

The disks II and I2 are provided with symmetrically arranged series of apertures 18. Bars I 9 have their opposite ends received in apertures in the disks H and [2 respectively and are sup ported thereby. Each bar 19 has a shoulder 28 Which is urged into engagement with the face of the disk l2 by a spring 2! which engages the end 22 which projects through the aperture in the disk II. In order to remove the bars I 9 they are moved against the opposition of the springs 2| to withdraw the shouldered end of the bars respect thereto by the band 32.

from their apertures in the disk -|2 and are then moved in a reverse direction to withdraw the ends 22 from the apertures inthe disk I I. To replace the bars the order of movements is reversed.

In Figures 4 to 8 inclusive there is shown an article of hardware such as the operating handle of a windshield regulator. The article is generally designated 23 and is provided with a bore 24 entering the same and reduced in diameter at 25-. When in use the bores 24 and 25 receive the end of a shaft and a screw or bolt is passed through another bore 26 to secure it to the shaft. Each article 23 is individually supported with respect to a bar I9 by a rod 21 having one end secured to a bar l9 by fastening elements 28. On the other end of the rod 21 is a shoulder 29 bearin against one side of a washer 30. On the other side of'the washer, spring fingers 3| are secured to. the rod by a metal band 32. The spring fingers 3| are preferably of arcuate cross section as illustratedvin Fig. 6 and are formed of a single blank with a uniting portion 33' substantially encircling the end 34 of the rod and secured with The spring fingers 3| engage the surface of thebore 25"to retain the article 23 on the rod. On the extremity of the rod end 34' is provided a project ing part 35 which extends through the bore 26 and completely fills the same so as to preclude the coating compound, in which the article is later dipped, from entering the bore 25', through the bore 26', to contact with the spring fingers 3|. The washer 30' seals the end of the bore 24 to prevent the coating compound from entering that end.

Figures 9, and 11 illustrate another article of hardware such as a handle for a window lift operator. This article, which is designated 31 has a squared socket 38 for receiving the end of a window lift shaft and has bores 39 through which securing elements extend to secure the handle on the shaft when the handle is in use on an automobile. 'Ihe support for the article 38 comprises a rod 40 which is secured to a bar |9a by fastening means 28a. The rod 46 has a collar 4| supporting a washer 42 and secured to'the end of the rod are crossed flat springs 43.

, engage the walls of the bore 38 to frictionally retain the article on the rod. It will be noted that two of the springs 43 cover the bores'39 to prevent the coating compound from entering thesocket 39 when the article is dipped and that the washer 42 prevents the coating compound from entering the end of the socket 38.

In Figures 12, 13 and 14 there is illustrated an article 44 which represents another well known type of window lift operator. The handle has a squared socket 45 for the reception of an operating part of a window lift mechanism when the device is in use. The handle is ordinarily secured to the said operating part bypassing a bolt or screw through a bore 46 which is concentric with the socket 45. The support for this article comprises a rod 41 having a shoulder 48'backing a washer 49 which is preferably formed of rubber. Secured on the end of the rod are crossed spring fingers 56, the fingers being flat and secured in place by a screw 5| having a semi-spherical head. The spring fingers 50 frictionally retain the article 44 on the rod 41 and the semi-spherical head on the screw 5| seats on theend of the bore 46 The springs 43- to prevent the dipping compound from entering the socket 45 therethrough when the article is subsequently dipped therein. The other end of the socket 45 is closed by thewasher 49.

It becomes apparent from the foregoing that a group of articles may be assembled on the bars I9 at one time and the bars l9 assembled in the disks i and I2 so that a group of articles may be dipped at one time. The springs 2| which yieldably retain the bars IS in their respective apertures l8 facilitate removal and replacement of the bars without stopping rotation of the disks. It also becomes apparent that the coating compound is excluded from the bores and sockets in the articles being coated with the result that it is notnecessary to remove the same from such sockets and bores after the coating operation has been completed.

Although specific embodimentsof'the invention have been illustrated and described it will be understood that various changes may be made within the scope of'the appended claims without de-' parting from the spiritof the invention, and such changes are contemplated.

What I claim is:-

l. Awork carrier comprising a pair of spaced apart rotatable members, said" members having uniformly spaced apart apertures formed therein, said apertures being of angular shape, work supporting bars having angular ends disposed in sets of said apertures, said angular openings and ends positively holding said bars against rotation with respect to said rotatable members, andyieldable' means for retaining said bars in said apertures.

2. A work carrier comprising a pair of spaced apart rotatable members, said members having uniformly spaced apart apertures formed therein,

work supporting bars having their'oppositeends disposed in sets of said apertures, said ends and apertures being of angular formation whereby they interlock to hold the bars against rotation with respect to said rotatable elements, yieldable means for retaining said bars in said apertures, and means on said bars for receiving work articles, said last named means including yieldable frictional means for retaining the-articles thereon.

3. A work support for articles havinga socket portion with apertures leading thereinto, said work support including yieldable means adapted to be inserted intothe socket part to frictionally engage the same, and means on said work support for obstructing the apertures in said article,

said last named means being adapted to close the apertures at their inner ends.

4. A Work support for articles'having a; socket portion with apertures leading thereinto, said work support including yieldablemeans adapted to be inserted into the socket part to frictionally engage the same, and means for obstructingthe apertures in said article, said last named means comprising a projecting portion adapted to extend through the socket and into an aperture in the article;

5. A work support for articles having a socket portion with an aperture leading thereinto, said work support including yieldable means adapted to be inserted into the'socket part to frictionally engage the same, and means for obstructing the aperture in said article, said last named means comprising a part adapted to extend through the socket to seat on the inner end of the aperture.

GEORGE S. HENDRIE.

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