US2031816A - Dishwashing machine - Google Patents

Description

25, 1935- E. L. BLAKESLEE DISHWASHING MACHINE Filed May 27, 1952 5 Sheets-Sheet 1 I fru en'Z'afl- ZZZ-ward Z. Zifagca/cf Mv-M,

Feb. 25, 1936. E. BLAKESLEE DISHWASI-IING MACHINE Filed May 27, 1932- 5 Sheets-Sheet s Feb. 25, 1936. E. L. BLAKESLEE 2,031,816

DISHWASHING MACHINE Filed May 27, 1932 5 Sheets-Sheet 4 [Patented Feb. 25, 1936 DISHWASHING MACHINE Edward L. Blakeslee, Oak Park, 111., assignor to G. S. Blakeslee & 00., Cicero, 111., a corporation of Illinois Application May 27, 1932, Serial No. 613,799

6 Claims.

This invention relates to dish washing machines,and has to do with the spray heads and associated parts of the machine.

One of the main objects of my invention is to provide a dish washing machine of simple construction and operation, and in which unnecessary duplication of spray pipes and associated parts, in the spray area, is eliminated.

Another object is to provide means for tiltably supporting the spray heads so as to facilitate cleaning thereof and removal of the screens below the lower head. A further object is to provide improved means for supporting the spray heads for tilting movement. It is also an object of my invention to provide a. spray head of novel and improved construction. Further objects and'advantages of my invention will ap pear from the detail description.

In the drawings:-- Figure 1 is a vertical sectional view through a washing machine taken adjacent one side and extending from front to back thereof, this view being taken substantially on line il of Figure 2, embodying my invention;

Figure 2 is a section taken substantially on line 22 of Figure 1;

'Figure 3 is a sectional view, on an enlarge scale, through the manifold of one of the spray heads, taken substantially on line 3-3 of Figure 1, parts being shown in elevation.

Figure 4 is a section taken substantially on line 44 of Figure 3;

Figure 5 is a section taken substantially on line 55 of Figure 3;

Figure .6 is a view similar to Figure 1, but showing a modified form of spray heads;

Figure 7 is a plan view of the lower spray head shown in Figure 6;

Figure 8 is a section taken substantially on line 8-8 of Figure 7; i

Figure 9 is a section taken substantially on line 9--9 of Figure 6.

I have illustrated my invention, by way of example, as applied to a washing machine which is, in general, of known type. This machine comprises abort-like sheet metal casing l provided with openings at the front andback, controlled by doors 2, for insertion and removal of trays containing dishes or other articles to be washed. The doors 2 operate in suitable guides 3 and may be opened and closed manually or may have associated therewith any suitable or preferred door operating means. Angle tracks 4 extend through casing I from front to back thereof and are disposed for reception of a container or tray 5 for supporting dishes 6 in proper position for washing. This tray may he slid into the casing along the tracks 4, when one of the doors is opened, after which the door is closed and the dishes are washed and rinsed, and then removed from the casing through the other door opening.

The lower portion of casing l constitutes a tank 1 for containing washing solution. An outlet pipe 8 extends from the bottom of the tank 10 the casing adjacent the top thereof and through the top wall of the casing. The pipe II is connected to a suitable source of supply of hot water for rinsing, and is provided, exterior of and adjacent the top wall of easing l, with a control valve 12 of suitable type. The pipes 9 and II are disposed in alignment transversely of the casing for supporting upper and lower spray heads in a manner to be described.

Two screens 13 are removably mounted within casing I at the top of tank portion 1 thereof.

Each of these screens comprises a frame of rectangular shape, the side bars of which are of angle cross-section, the end bars It of the frame being of approximately Z-shape in cross-section and engaging over angle supporting strips l5 secured to the front and back walls of the casing below the door openings. A tab 16 is suitably secured to each of the end bars 14 and projects inwardly a short distance over the wide mesh I! of the screen for convenience in removing the screens from the casing. In the particular embodiment shown in Figures 1 and 2, the screens 13 are confined between one side wall of the casing and a channel plate l8 secured to the other side wall of'the casing, through which plate the pipe 9 passes. By raising either end of the respective screens, the screens may be slid endwise through the door openings so as to be removed from or replaced in the casing. These screens serve to prevent entry of large particles of food or other materials into the tank I and. thence to the pump, as is known in the art.

A T connection 20 is in erposed in the pipe 9 and receives a nipple 2| w ch screws into the stem of the T. Nipple 2| is disposed 'coaxially 58 This pipe 9 is 15 with a nipple 22 which screws into an elbow 23 secured upon the lower end of pipe I! An elbow 24 is screwed upon the upper end of pipe 9 and receives a nipple 2| which screws into the elbow, this nipple 2| being disposed coaxially with a nipple 22 which screws into the stem of a T 25 interposed in the pipe The respective pairs of nipples provide-pivotal supports for upper and lower spray heads, and serve to supply to the spray heads, from the pipes 9 and I I, respectively, washing solution and rinsing water.

Upper spray head 26 and lower spray head 21 are of similar construction and are mounted in a similar manner, so that the description of the construction and mounting of one of the spray heads will suflice.

Referring more particularly to Figures 3, 4, and 5, the upper spray head comprises a manifold 28 provided with two separate passages 29 and 30 which continue into and open through projections 3| and 32, respectively, at the sides of the manifold. Nipple 22 extends through the side wall of projection 3| and opens into passage 29,

and nipple 2| extends through the side wall of projection 32 and opens into passage 30. Collars 33 and 34 are suitably secured upon the nipples 22 and 2|, respectively, and abut the side faces of projections 3| and 32 so as to hold the manifold 28 against objectionable lateral play while reducing leakage about the nipples. In this manner, the manifold is pivotally supported by the nipples for rocking movement on an axis extending transversely of the casing, and the nipples also serve to establish communication between passages 29 and 30 and pipes II and 9 respectively.

Manifold 28 is provided at the front face thereof and-in the plane of passage 30 with a series of bosses 35, and with a second series of bosses 36 disposed in the plane of passage 29. Bosses 35 are suitably bored and threaded for reception of the ends of. washing spray pipes 31 which screw into the bosses and are closed at their outer ends by suitable caps 38. The pipes 31 are transversely lution supplied to these pipes. Bosses 36 are suit-,

ably bored and threaded for reception of rinse pipes 40 which screw into the bosses and are closed at their outer ends by caps 4|. Suitable spray nozzles 42, which may be of any suitable or preferred type, are mounted upon the pipes 40 I s to project downwardly onto the dishes, in spray form, the rinsing water supplied to the pipes 40. In the form of spray head illustrated there are four washing solution pipes 31 and two rinsing pipes 40 of'considerably less diameter than the pipes 31, it being noted that passage 30 is of appreciably greater cross area than passage 29. The number of spray pipes employed, and the relative sizes thereof, may be varied as conditions require, or as desired. The rinsing head 21 is disposed above the screens I3 and below the tracks 4 so as to project the washing sprays and the rinsing sprays upwardly over and against the dishes 6. This lower spray head is similar in construction to the upper head, it being noted, however, that the spray pipes of the lower head are directed oppositely to the spray pipes of the upper head, and each of the pipes 31 of the lower head is provided with but four slots 39, whereas the the forward end of one of the pipes 31 of the lower spray head. This finger is disposed to en-- gagwithin an upwardly curved supporting bracket 43a riveted or otherwise suitably secured to the front wall of the casing. This bracket and the finger cooperate to hold the lower spray head in horizontal position. When it is desired to re move the screens l3, the lower spray head is swung upwardly into the dotted line position of ,Figure 1, which permits of the forward ends of the screens being raised suficiently so that the screens may be slid lengthwise through the door opening at the front of the casing. After the screens have been cleaned, they are replaced in the casing, the lower spray head remaining in the dottedline position of Figure 1, after which the spray head is returned to its normal position. The tiltable mounting of the spray head is also of advantage in that it facilitates cleaning thereof.

these pipes for cleaning the same. The upper spray head 26 is normally held in horizontal position by a finger 43 which engages into hooklike supporting member 43b pivoted at its upper end to the casing and, when released, tends to swing downwardly. Downward movement of the upper spray head beyond the dotted line position of Figure l is prevented by a chain 45 suitably attached to one of the spray pipes 31, the upper end of this chain being secured by an eye member 46 to the top wall of the casing. With the upper spray head in'the dotted line position of Figure 1, ready access is had thereto for cleaning the spray pipes and nozzles, in the same manner as when cleaning the lower spray head. By limiting downward movement of the upper spray head, this head is held in the most convenient position for cleaning, and bending of the wall of the casing at the top of the door opening through the back of the casing, due to contact with this wall of the manifold of the upper spray head, is prevented. a

It will be noted that both of these spray heads are disposed between and supported by the pipes 9 and II, which is advantageous as supporting the spray heads at each side thereof so as to hold them in horizontal position. Preferably, suitable brackets 41 connect the pipes 9 and II to the side walls of the casing and hold the pipes rigidly -in position, these brackets supplementing the and each spray head comprises a manifold 50. comprising a washing solution passage 5| and a.

rinse water passage 52. Washing spray pipes 31a screw into the manifold 50 from opposite sides thereof and open into passage 5|, and rinse water pipes 40a screw into the manifold from tween the passages thereof and pipes 9 and II,

respectively. A hook 53 is pivoted to the front wall of the casing above the front door opening and is disposed to engage about finger 42 of the top spray head for holding the latter in horizontal position. This hook is yieldingly urged toward finger 42 by a spring 54.

The lower spray head of Figure 6 is mounted in the same manner as the upper spray head and of the screens, and in the opposite direction for 4 removing the other screen, it being noted that in Figure 6 the screens extend transversely of the casing, as distinguished from Figure 1, in

which the screens extend fromv front to back of the casing. After removal of the screens, the

lower spray head may be tilted at a greater angle for ease in cleaning the pipes and spray nozzles. The upper spray head may also be tilted into suitable position for facility in cleaning.

In both forms of my invention disclosed, the

' spray head is pivotally mountedbetween the washing water supply and rinse water supply pipes and comprises two separate passages, the nipples -establishing communication between these passages and the respective pipes and providing a pivotal mounting for the spray head which permits ready tilting thereof for'removal of the screens and for cleaning.

While I have disclosed both forms of my invention, by way of example, as applied to straight through machines, in which the dishes are inserted at one end of the casing and removed through the opposite end thereof, it is not limited to thisparticular type and, in its broader aspects, my invention is intended for use with any type of washing machine. In practice, the number of slots in the washing solution pipes of the spray heads and the disposition thereof, as well as the number and disposition of the nozzles of the spray pipes, may be varied as desired or necessary.

As above indicated, and as will be understood by those skilled in the art, changes in constructionand arrangement of parts of my invention may be resorted to without departing from the field and scope of the same, and I intend to include all such variations, as fall within the scope of the appended claims, in this application in which the preferred forms on'ly of my invention are disclosed.

What I claim is:'--

'1. In combination in a dish washing machine, a casing, a washing-solution pipe at one side of the casing, a rinsewater pipe at the other side 7 of the casing, a spray head disposed between the pipes and comprising washing spray means and necting the head at the sides thereof to the pipes for movement on an axis extending transversely of the casing, said connecting means establishing communication between the washing solution pipe and the rinse water pipe and the washing spray means and the rinsing .spray means, respectively.

2. In combination in a dish washing machine, a casing, pipes at the sides of the casing, a spray head comprising a manifold disposed between the pipes and provided with two separate passages, spray means communicating with the respective passages of the manifold, and means pivotally connecting the manifold to the pipes for turning movement on an axis extending transversely of the casing, said connecting means establishing communication between the pipes and the passages, respectively.

3. In combination in a dish washing machine, a casing, pipes at the sides of the casing, a spray head comprising a manifold provided with two separate passages, and coaxial nipples pivotally connecting the pipes and the manifold and opening into the respective passages of the latter.

4. In combination in a dish washing machine,-

a casing, pipes at the sides of the 'casingfla spray head comprising a manifold disposed between the pipes and provided with two separate passages, and coaxial nipples secured in the pipes and extending into the manifold, said nipples opening into the respective passages of the manifold and the manifold being pivotally supported by the nipples for turning movement.

5. In combination, two pipes, a spray head comprising a manifold disposed between the pipes and provided with two separate passages, said headhaving separatespray devices communicating with the respective passages, and coaxial nipples secured in the pipes and extending into the manifold, saidnipples pivotally supporting the manifold and opening into the respective passages thereof.

6. In combination, a manifold provided with two separate passages and with openings into the respective passages for reception of supporting and liquid supply members, separate spray devices attached to the manifold and communicating with the respective passages thereof, and supporting and liquid supply members extending into said openings and tiltably supporting the manifold, said members being connected to rinsing spray means, and means pivotally con-

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