Bed pan washer

April 2, 1963

3,083,375

Filed April 17, 1962

R. L. JEWELL

BED PAN WASHER

Sheets-Sheet i

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3,083,375

April 2, 1963

Filed April 17, 1962

R. L. JEWELL

BED PAN WASHER

Sheets-Sheet 2

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INVENTOR.

United States Patent Office 3,083,375 ____________ Patented Apr. 2, 1963

3,083,375 . BED’PAN WASHER

W»¹?*¹ Jewell, Erie, Pa., assignor to American sterilizer Company, Erie, Pa., a corporation of Pennsylvania

Filed Apr. 17, 1962, Ser. No. 188,207 g. 9 Claims. (CL 4-—7)

This invention is intended to improve the operation and simplify the construction of bed pan washers.

In the drawing, FIG. 1 is a sectional side elevation of a bed pan washer, FIG. 2 is a front elevation, FIG. 3 rrr/? elevation, FIG. 4 is a control diagram, and FIGS. 5a, 5b and 5c are sectional views illustrating the operation of the non-hold-open flush valves used in the washer.

The bed pan washer is shown in combination with a toilet 1 of the wall mounted, syphon jet type having a trap 2 and a seat 3 closing against a rim 4. At the back of tne rim 4 is the washer cabinet 5 having an open lower end 6 of U-shape seated on and sealed to a complementary U-shaped section 7 at the back of the rim. The cabinet, accordingly, drains into the back of the toilet bowl., Since the cabinet is directly above the trap 2, it fits within the floor space required by the toilet bowl At opposite sides of the lower end of the cabinet are hinge blocks 8 for the seat 3 and for a cover 9 for the cabinet. The parts so far described are described in greater detail in application Serial No. 66,292.

At flie top of the cabinet is a fitting 10 connecting a 30 flush line 11 to the upper end of a spray head 12 Which extends backward along the top of the cabinet as indicated at 13 and then downward along the back of the cabinet as indicated at 14 and terminates in a forwardly of the spray head is useful. The section 13 along the top of, the, cabinet directs streams downward in the general direction of arrow 16 through suitably spaced perforations.. The section 14 along the back wall· of the cabinet directs streams horizontally in the general direc- 40 bon of arrow 17 through suitably spaced perforations. Tne gooseneck 15 directs streams upward in the general direction of arrow 18 and laterally in the general directions of arrows 19, 20. The spray pattern is not limited to single streams in the directions of the arrows. There 45 may be several streams which fan out to obtain the desired coverage. By this spray head construction, both the interior and exterior surfaces of urinals and bed pans may be washed. The gooseneck 15 as shown in FIG. 1 also provides a urinal supporting hook which positions 50 the unnal so as to effectively wash the interior. The gooseneck also provides more effective washing of the interior of the bed pans when supported facing the spray head as shown in FIG. 3.

In addition to the flush line 11 supplying the spray 55 nozzle 12, there is a flush line 21 connected directly to the toilet bowl. The flush line 21 provides a trap flushing cycle which flushes the bowl 1 and trap 2 so there will be no lingering accumulation from the preceding washing cycle. The trap flushing cycle would be desir- 60 ' able,even if the bed pan washer were not associated with a toilet bowl but were merely directly connected to the trap. There should be a trap flushing cycle following each washing cycle.

G. 4 diagrammatically illustrates the control for the 65 in the spray line for washing and trap flushing cycles. As there shown, a suitable flush valve 22, for example a Sloan Crown valve as shown on pages 50, 51 of Catalog 60 of the Sloan Valve Company, is connected between hot water suplino 'y'TL 4.1 43 1. f .. -t »τ ,, , · - ------------“'*'· —LUC handle z4, hot water is supplied through the flush line 11 to the spray head 12 for a period of time and at a rate of flow determined’ by the adjustment of the valve. Line 11 is connected through tube 25 to a- bellows 26 connected through link 27 to the operating handle 29 of another flush valve 30 connected between cold water supply hne 31 and the trap flush line 21. When there is no water flowing through the line 11, the bellows 26 are collapsed and the handle is lifted to the flush position shown in dotted lines. Whenever water flows tnrough line 11, the pressure conducted through' tube’ 25 expands the bellows and returns the operating handle 29 to tne neutral position shown in full lines in FIG. 4. Returning the handle to the neutral position resets'the valve because the valve is of the nOn-hold-open type. Accordingly, as soon as the water pressure in flush liiie IT drops’ °^{f the ValTC 22}’ ^{the bellows 26} collapses and lifts the operating lever to’ the flush position. This causes cold, water, flushing of the trap through the line 21 tor a length of time and at a rate of flow determined by the setting of the valve 30. When the flush valve 30 shuts off,, the operating handle 29 remains in the upper or operating position but due to the non-hold-open constructionillustrated in FIGS. 5a, 5b, and 5c, this does not eitect the operation of the valve.

, In the particular flush; valve illustrated, movement of the operating handle to the flush'position moves a pliingef 32 _mward, thereby tilting a relief valve 33 as shown' in TIG. 5a and starting the cycle. During flushing/ the parts are in ,the position shown in FIG. 5b. At the end of the flushing cycle, the parts return to the position shown in FIG. 5c. If the handle is still held in the operating position, the plunger 32 extends beneath the lower end of a telescoping gland 34 on the relief valve which is stopped in the position shown in FIG 5c No cannot be initiated. The operating handle must first be returned to the neutral position, retracting the plunger 32 and-allowing the telescoping gland 34 to drop to the posiii^on,^sho]Tⁿ J^{n FIG}’ ^5a- From one aspect, movement of the handle from the neutral position trips the valve and return of the handle to the neutral position resets the i I? ^S? ^{can be} again. In the control, expansion of the bellows 26 resets the valve 30 and the collapse of the bellows 26 trips the valve.

, Normal flushing of the toilet is through a handle 35 pivoted at 36 and connected through link 37 to the operating handle 29 for the flush valve 30. This does not affect the washer. As soon as the handle 35 is released, the handle 29 returns to the flush position shown in full lines in FIG. 2 and in dotted lines in FIG. 4.

The bellows 26 has inherent resilience tending to return it to the collapsed position. The bellows accordingly also serves as a spring. If the inherent resilience were insufficient it could be supplemented by a spring

The wash water flowing in flush line 11 is also used to aspirate detergent from a detergent container 38 through tube 39.