US1716317A - Automatic plaster-supplying device - Google Patents

Description

,June 4, 1929. OWY 1,716,317

AUTOMATIC PLASTER SUPPLYING DEVICE Filed Sept. 3, 192'? 2 Sheets-Sheet 1.

`lune 4, 1929.

L.. I OWY 1,716,317 'AUTOMATIC PLASTER SUPPLYING DEVICE I Filed sept. s, 1927 2 Sheets-Sheet 2 y Patented June 4, 1929.

UNITE S LOUIS LOWY, OF NEW YORK, N. Y., ASSIGNOB, OF ONE-HALF TO ISIDORE GROSSGOLD.

AUTOMATIC PLASTER-SUPPLYING DEVICE.

, Application led September 3, 1927. Serial No. 217,341. .l

This invention relatesto a new and useful device in the nature of an automatic plaster supply device provided for the purpose of supplying plaster through ahollow flexible member as a means of eliminating the manual effort ordinarily required to transport or carry plaster, such as is used to plaster walls, ceilings, and the like, of buildint'gs,l to the wall where same is to be used or applied.

rlhe object of the invention is to provide a device of the class described of novel construction and arrangement of parts hereinafter more fully described, claimed, and illustrated in the accompanying drawing.

Fig. 1 is a side elevational view of my improved device as same would appear when in use.

Fig. 2 is a central longitudinal sectional view thereof illustrating a further develop ment of my improved device.

Fig. 3 is a fragmentary sectional view taken on the line 3-3 of Fig. 2.

Fig. 4 is a fragmentary perspective view thereof, illustrating in particular another development of my improved device.

Fig. 5 is a fragmentary sectional view illustrating in particular the hopper as embodied in my improved device.

Fig. 6 is an enlarged sectional view taken on the line 6 6 of Fig. 2.

As here embodied my improved automatic plaster supply device comprises the usual screw conveyor 10 mounted on the shaft 11 rotatively mounted in the front and rear end plates 12 and 13 of the tubular member 14. The tubular member 14 is of suitable diameter to closely conform to theouter diameter or periphery of the screw conveyor 10.

The tubular member 14 is provided with downwardly extended elements `16 or feetv secured as at 17 by bolts, screws, studs, or the like, to the base plate 18.

The front end plate 12 is provided with an extended portion 19 of tubular construction over which one extremity of the flexible hollow member 20 is slidably engaged, and which is secured thereto as at 21 by the usual clamp as a means of securely holding the said flexible member 20 in place. Similar flexible hollow members 21 are secured'by the ordinary couplings 22 to each other and to the first mentioned flexible hollow member 20, so as to provide a continuous flexible hollow line of any desired length. The valve 22 is attached to the free extremity of the flexible members 21 and is provided with a nozzle element 23 extended therefrom. l

The worm 24 is mounted on the rear extended extremity ofthe shaft 11 and meshes with the worm gear 25 rotatively mounted on the pin 26 carried in the bracket 27 secured to the base plate 18.

rlhe shaft 28 is rotatively mounted in the housing 29 and in the bracket 30 secured to the said housing. rlhe clutch member 30 is secured to the inner extremity of the shaft'28 and is provided with radial recesses31. The shaft 28 is extended outwardly from the housing 29 and has mounted on its extended extremity a worm 32, meshing with the above mentioned worm gear 25. The shaft 33 is mounted in the housing 29 and in the bracket 34 secured to the said housing and is in alignment with the said shaft 28. rlhe inner extremity of the shaft 33 has formed therein longitudinal recesses 35 or serrations, adapted to slidably receive the clutch member 36 as a means of driving the said clutch member 36 when the shaft 33 is rotated lor driven, as

element 42. The housing 29 is of box like construction of suitable size to enclose the above mentioned mechanism and isvprovided with acover member-42. The said housing 29 is mounted on the base plate 18. The pulley 43 is mounted on the outer extended extremity of the shaft 33, adapted to receive a bolt extended over the'pulley 43 and a similar pulley mounted in any suitable convenient prime mover, as a means of driving my improved device. The latter mentioned elements are not shown in the accompanying drawing. It should be understood that a suitable electric motor 44 may be mounted on the base plate 18 and operatively attached to the shaft 33 as a means of driving my improved device. The said electricmotor 44 is connected by means of the electric Wires 46 to any suitable convenient source of electric current.

The hopper 51 of hollow cylindrical construction is secured at its lower extremity to the above mentioned tubular member 111 and extendedvertically upwardlytherefrom. The bevel pinion 52 is mounted onthe outer exten ded portion of the said shaft 11 and meshes with a similar bevel pinion 53, mounted on the shaft 54E rotatively mounted in the brack'- ets 55 and 56 secured to the hopper 51. rIhe bevel pinion 57 is mounted on the upper extremity of the shaft 541 and meshes with a similar bevel pinion 58 secured to the shaft 59 rotatively mounted in the extended element 66 ot the said bracket 56. lIhe shaft 59 is provided with an enlarged portion 61.01' collar element adapted to retain the pinion 62 in position on the said shaft. r1`he pinion 62 is keyed to shaft 59. r1`he pinion 62 is removably secured to the sha'tt 59 by means oi' the collar 64: slidably engaging over the said shaft and the usual dritt key 65 somewhat tapered and adapted to removably engage in a similar tapered opening formed in the said shaft 59, a-tvor near the extremity thereof. The piston 66 slidablyl engages in the hopper 51 land has secured thereto and extended upwardly therefrom a rod 67 having formed therein` rack teeth 68 adapted to engage the teeth of thepinion' 62.' The above described construction is such as will permit the plaster placed in the hopper 51 to be forced under pressure 4into the tubular member 141 by the downward movement of the pistonV 66 which is actuated by the movement or rotating of thev shaft 11. It should be understood that whenl the said piston 66 has reached the down ward position thereof as designated by the reference numeral 69 that the pinion 62 is removed from the shaft 59 and thepiston. 66 readily and, easily removed from the hopper 51 so as to permit the hopper 51 to be refilled. c

I have alsoshown a workman 70 provided with the above mentioned nozzle 28y as a means of illing the container 71 or what is usually known as the hed in proximity to thewall 7 2 to be plastered. n

In Fig-2 of the accompanying drawing, I have shown a container 72 ot box-like construction, mounted on the supports 7 8, sef cured to the tubular member 14. The cover 74:is slidably mounted in the container 7 2 and is normallyl forced downwardly by the expansion spring 75 positioned intermediate the cover 4711 and the brace member 7 6,.hinged asat 77, to the container 72 and held in a closed positionby means of the wing nut 78 threadedly mounted on the screw 79, hinged, as at 79, to the container 7 2. The flexible hollow member 80 is secured at one extremity to the bottom portion ofthe container 72 and. tothe flanged portion 81 of the hopper 5l, adjacent to the lower portion thereof.

The fiapper valve 82 indicated open by dot dash lines 82, is hinged, as at 88, to the inner lower portion of the hopper 51, and is adapted to enclose or cover the opening formed in the hopper 51 at the flanged portion 81 thereof., rEhe above described construction is such as will permit the plaster 84 placed in the container 72- to be Yforced downwardly by the spring 75, and by the suction of the piston 66, on theI up or return stroke of the said piston, as a means of filling the hopper 51. It should be understood that ythe flapper valve 82 will be forced open, as designated by the reference numeral 82 during the. return strokeV ot the piston 66, so as to permit the said plaster 811 to enter therhopper 51, and that the downward stroke oit the piston 66 will close .the tlapper valve 82,'so as to permit the plaster' drawn into the hopper 51 to be Jrorced into the tubular member ist. The pinion 85 is freely mounted on the shaft 59, and held thereonby the collar 86 secured -to the shalt 59. r1`he ratchetfpawl l87 is pivotally secured to the pinion 85, and is normally held in engagement with the ratchet indentations 89 formed in the shaft 59 adjacent to the pinion 85 by means of the tension spring 90 secured to the ratchet pawl 87 and to the pinion 85. The above described construction is such as will permit the shaft 59 when rotated as above set forth to drive or rotate the pinion 85 in one direction only, so as to 'torce the piston 66, downwardly into the hopper 51.

I haveY alsoy provided a. solenoid, having a fixed lield 91, and having the wires 92 and 98, thereof, suitably connected to any convenient source of electric current. The tleld 91 of theA solenoid is mounted on the support 9-isecured to and extended upwardly from the hopper 51. T he movable core of the saidL solenoid is connected to the tree extremity of the red 67. rEhe above described construction is such as will force the piston 66, upwardly, on its return stroke, when theii'eld 91 of the said solenoid is energized.

Ichave also provided a tubular member 96 secured to the bottom ot the tubular member 14, directlybelow the hopper 51. The plate 97 is slidably mounted in the tubular member 96, and is normally held in anupper position, against thev lug elements 98, by means of the expansion spring 99,*positioned in the tubular member 96 intermediate the-plate 97 and the base 100; The base 160 is threadedly secured to the lower inner extremity ot the tubular member 96 and is provided with lug elements 101, as a means of rotating the base 10,0', so as to increase or decrease the eii'ective pressure of the spring 99. The above described construction is such as will permit plate 97 to `function as a reliefr valve as a means of preventing the flexible hollow members 2O and 20 irom being broken due to the pressure exerted by the piston 66 in event the nozzle 28 is closed. It should be understood that the action of the said relief valve may be adj usted by the adjustment of the base 100.

In Fig. a of the accompanying drawing I have shown the above mentioned front end plate 12 provided with a plurality of extended portions 19 adapted to receive a plurality of hollow flexible members 20 as a means of permitting the plaster to be simultaneously forced to a number of desired places as would be desirable when plaster-ing a number of rooms in a building.

In Fig. 1 of the accompanying drawing, I have shown a'flexible hollow member 48 secured at one extremity to the water faucet 49. The flexible member 48 is provided with a nozzle 50 secured to the free extremity thereof. yllhe above described construction is such as will permit water to be forced into my improved device, through the hopper 51 as a means of flushing out the interior thereof, and the flexible hollow members 20 and 20 as a means of preventing clogging. I have also provided a rod 102, normally removably secured to the base plate 18, by means of the clips 103, attached thereto. The rod 102 is provided with a handle element 104, as a means of manipulating the said rod. rIhe above described construction is such as will permit the rod 102 to be used to clean the ilexible hollow members 20 and 20 when the said flexible hollow members are disconnected by means of the couplings 22.

I-Iaving thus described my invention what I claim as new and desire to protect by Letters Patent of the United States is as follows:

1. In a device of the class described, a tubular member provided with a screw conveyor, a hopper connected with the tubular member, a piston slidably engaged in the said hopper, a means for mechanically forcing the piston downwards, a solenoid connected for returning the piston, a container connected to the hopper, a flapper valve connected to the hopper so as to be capable of closing the connection between the container and hopper, and a means for forcing plastic material from the container towards the hopper, so that as the piston travels upwards, the plastic material enters the hopper. A

2. In a device of the class described, a tubular member provided with a screw conveyor, a hopper connected with kthe tubular member, a piston slidably engaged in the said hopper, a means for mechanically forcing the piston downwards, a solenoid connected for returning the piston, a container connected to the hopper, a flapper valve connected to the hopper so as to be capable of closing the connection between the container and hopper, and a means for forcing plastic material from the container towards the hopper, so that as the piston travels upwards, the plastic Inateri al enters the hopper, the latter means consisting of a cover slidably arranged in the container, a brace member attached t0 the container, and an expansion spring acting between the cover and brace member.

3. In a device of the class described, a tubular member provided with a screw conveyor, a hopper connected with the tubular member, a piston slidably engaged in the said hopper, a means for mechanically forcing the piston downwards, a solenoid connected for returning the piston, a container connected to the hopper, a flapper valve connected to the hopper so as to be capable of closing the connection between the container and hopper, a reliefA valve connected with the tubular member, and being capable of relieving pressure caused by the downward movement of the piston, and a means for forcing plaster material from the container towards the hopper, so that as the piston travels upwards, the plastic material enters the hopper.

In testimony whereof I have aflixed my signature.

LOUIS LOWY.

Images