USRE21755E

USRE21755E - kelley r

Info

Publication number: USRE21755E
Authority: US
Publication date: 1941-03-25

Description

l I March 25, 1941. RQE. KELLEY Re. 21,755

- PORTABLE APPARATUS FOR SUPPLYING HEAVY MASTICS 'ro MASTLC APPLYING GUNS Omgmal Flled April 2, 195! 2 Shasta-Sheet 1 (i I v d 6 INVENTORT 2"" Wad 6 ATTORNEYS a March 25, 1941. R KELLEY Re. 21,755

PORTABLHAPPARATU FOR SUPPLYING' HEAVY MASTICS 'r0 MAs'TIp APPLYING GUNS 1 Dmgmal Fxled April 2, 1937 2 sun 5 2 aol ATTORNEY w Reissued 25, 1941' PATENT OFFICE PORTABlJt APPARATUS roa ammo nnavr ms'rrcs T mas'rrc memo GUNS Raymond E. Kelley, Snyder. N. Y. Original No. 2,160,871, dated June 8, 1989, Serial No. 134,872, April 2, 1937.

Application for reissue January 28, 194., Serial No; 815,841

I 11 Claims. This invention relates to a portable apparatus which holds a quantity of heavy asphalt fibered mastic, such as is used in damp-proofing and waterproofing building walls and the like and supplying such mastic under pressure to a mastic applying gun such as the pressure gun for the application of heavy asphalt ilbered inastic disclosed in my Patent No. 1,989,696, dated Feb ruary 5, 1935. Prior to the commercial use of the present invention in combination with my said pressure gun, attempts had been made to apply heavy asphalt flbered mastic by means other than troweling, but'such efforts did not meet with success due to the fact that the melo terial being handled wasso extremely viscous that it was impossible to secure a uniform flow of the mastic to the gun and also uniform, plication by the gun itself was impossible.

With the pressure gun shown in my said pat-- tent heavy fibered mastics were successfullfapplied to wall surfaces as' a uniform spray so as to provide a uniform coatingand thickness, and

the present invention is directed to an apparatus for supplying heavy asphalt illbered mastic to the gun for application on the building walls or the like. a

The principal object of the present invention is to provide a portable apparatus for containing and delivering a uniform stream of" heavy asphalt flbered mastic to-a pressure gun and which is so constructedthat it will not, under normal circumstances, become clogged and should any stoppage occur can be quickly cleared of the obstruction.

Another object of the present invention is to provide'such apparatus which is compact and comparatively light in weight so that it can be readily moved from place to place by hand. there- 5o er application of' the mastic by the gun. Another object of the present invention is to i provide such an apparatus which includes such a container for the ilbered mastic which is readq ily removable so that the application ofdiffer- 55 ent material can be eilected without delay and also so that the pump and its piping are quickly rendered accessible should any stoppage occur.

Another important object of the present invention is to so arrange the pump and piping connections as to provide a straight line deliv- 5 ery of the heavy nbered mastic from the contamer outlet to the .flexlble conduits'which deliver the mastic to the gun and at the same time provide a cunpact and simple arrangement, particularly for applying power to the pump. 10

Another object of the present invention is to render all parts readily accessible for adjustment or repairs without impairing the compactness of the device as a whole. a a

In the accompanying drawings: 15

Fig. l is a side elevation of the portable apparatus for supplying heavy mastic to a pressure gun made in accordance with my invention. Y

Hg. 2 is a top plan view thereof. 20

Fig. 3 is a vertical longitudinal section, taken on line 8-4, Fig. 2.

Fig. 4 is a fragmentary, vertical, transverse section, taken on line 4-4. Fig. 3.

In its general organization this invention comprises a hand truck carrying at one end a remov- V able flbered-mastic drum, the outlet of which fits into the end of a straight horizontal pipe leading to an underslung gear pump carried at the-other end of the truck. the delivery from ,30 the pump consisting of a pipe which is in axial alignment with the horizontal inlet pipe and connects with a flexible hose leading to the pressure gun. A by-pass line is provided from ing a part of the mastic back to the barrel when the outlet pressure exceeds that at which it is desirable to operate in gun applying the mastic.

- The motor for operating the pump is, preferably located immediately above the pump and op- 40 erates through an overhead drive which also provides the necessary reduction between the motor and the pump. I

The truck which carries the apparatus forming the subject of'my invention is shown'as com prising two

side channel bars

8 and 8 which are connectedbyacroesbarlattherearendof the truck, a central cross bar 0 and a front cross bar I. all of which can be bolted together or secured in any suitable manner. The side chan- 5o nels also connected at their front endsby a bolster II which isdepressed at its center, as best illustrated in 4, and is. centrally con-- ne t o by a klngbolt H with the front axle I; of'it'he truck. front steering wheels I! are mounted at the ends of the front axle if in any suitable manner and the axle II is turned and the truck propelled by a 'U-shaped bar or handle it which .is connected to the axle If at its oppcsite ends so as to be capable of vertical swinging movement. The handle it may be retained in a vertical position by engaging notches provided in the lower flangesoi' the channels I and I. The rear axle ii is bolted to U-shaped s'upof angle bars, project upwardly and these side posts are connected at their upper ends by a cross angle bar I9 and are also braced by diagonal bars 20 which extend downwardly from a point near the top of the posts It to the rear ends of the side channels 5 and 8.

The heavy asphalt mastic which the apparatus is designed to handle is poured into an open drum or barrel 2! the lower head of which isldished downwardly and isprovided with a central discharge opening. The lower head of the drum ll rests on the upper flanges of theside channels I and 6 of the trucl: and also on the crom bar I. as best illustrated in Figs. 2 and 3. In the central discharge openlng of the drum H is welded an internally threaded ring 20 in which a depending pipe 21 is screwed. This pipe is cut away at one side as illustrated at 2" and flts into the open upper end of a T It, the ring 20 hearing against the rcund upper face of the I and the stem or pipe 21 snugly fitting in the 1' II soils to Prevent the leakage of mastic and at the same time permit the drum 2! and the attached-discharge pipe 11 to be readily lifted from the truck and T 2.. The

lower branch oi' the 1' II is closed by a plug II a and the horizontal branch of the 1' 20 connects.

with a horizontal discharge pipe II. The I a, discharge pipe 3| and stem or pipe 21 in the bottom of the drum areall of large dimensions so that there is no danger of the heavy mastic clogging these parts. The outlet of the pipe Si is connected with a reducer "to the inlet pipe I! of a gear pump it. It will also be understood that a single or double acting piston pump could be employed. The gear pump can be of any usual form and is shown as consisting of a casing SI contain- 7 ing a lower gear ll meshing with an upper driving gear ll which is driven by an external sprocket 3|. The gear pump is underslung and the meshing teeth of the gears are axially in line with the inlet pipes 33 and II. The mounting for the gear pump casing It consists of an underslung cross strap is which is secured at its ends to the side channels I and I and is strengthened by a longitudinal brace III which extends forwardly and is connected to the kingbolt 'l I, as best shown in Fig. 3. The rotation of the gears-delivers the mastic to an outlet pipe ll connected by a 1' I! with a valved pipe 48 to which the flexible tube which conducts the mastic to the pressure -gun (not shown) is connected. The outlet pipes ll and 43 are axially in line with the inlet pipes ll and 83 so that the "mastic is drawn in a straight line through these pipes and through the pump and discharged into the flexible hose 4. By this means there is little danger of this portionof the apparatus becoming clogged.

. I'br uniform gun application it vis desirable to supply the heavy mastlc at auniform pressure andto secure this uniform presure in a simple and eflective manner a by-pass pipe 4| connects aims . at IT.

withthe 1' 42 and extends upwardly to a pressure release valve 40. The pressure release valve it can be of any usual form and is shown as being of the type in which the pressure at which it will release ls determined by the setting of a weight" along a lever arm .1 when the outlet pressure of.the'gear pump 34 exceeds the setting of the valve 40 mastic is delivered from the vertical pipe I to a horizontal discharge pipe 48 which conducts the mastic back to the drum II.

Power for driving the pump II. is supplied by an electricmotor I! which is carried on a vertically swinging platform or base it, the rear end of which is pivoted to the cross bar! as indicated The motor pulley Ii drives a V-belt 59 whichlin turn drives a large wheel--6ll fast.to a shaft I. By mounting the motor 55 on the vertically swinging platform or base 58 it will be seen that the weight of the motor acts as a tight- ,ener for the belt it The opposite ends of the cross shaft ii are iournaled in bearings I, each of which is mounted near the upper end of a corresponding sidepost ll. Between, the bearing 62 a small sprocket II is fast to the'shaftll and this sprocket is connected by a chain 64 with the sprocket 0. driving the gear pump. It will be seen that by this arrangement the motor is located immediately above the pump and drives the pump through an overhead drive which also acts v to reduce the speed of-rotation of the motor to that required for proper operation .of the gear pump. w

It is desirable to have the airline andthe mastic line to the gun arranged close to one another and therefore the truck also carries a compressed air pipe I! which is secured in any suitable manner along the inside of the channel l and at its rear end is provided with a coupling for connection with a compressed air line 01 leading to the compressor and at its front end carries a coupling II for connection with the flexible compressed air hose 8. leading to the pressure With the portable apparatus as above described I have found that asphaltic mastics of extremely heavy viscosity. and also flbered mastics are delivered to a'pressure gun, such as is shown" in my aforesaid Patent No. 1,989,696, at a constant pressure and in a uniform stream so that such mastics can be easily and uniformly applied to surfaces such as masonry walls. Furthermore, by maintaining a straight line flow from the discharge of the drum to the flexible hose there is little danger of clogging. If an obstruction should occur a rag wrapped around the end of a stick can be easily inserted into the outlet pipe 21 of the drum 2! and the drum I! lifted from the truck so as to expose the open 1' I! and permit of ready removal of the obstruction. Further, it will be seen that the valve ll controlling the by-pass pipes ll and 4. insure that the mastic is supplied to the gun at a uniform pressure,- thereby. insuring the most eillcient operation of the gun. It will also, be seen'that by providing; the underslung gear pump I4 the mastic is drawn directly from the bottom outlet of the removable drum 25 and delivered in a straight line to the flexible hose",

leading to the pressure gun. It will therefore be apparent that the present invention provides a very compact and emcient portable apparatus for delivering heavy mastics and ilberedmastics to a pressure gun and which willinsure a constant supply at uniform pressure under all conditions of operation. I

I claim as my invention:

1. Portable apparatus for supplying a stream.

' of heavy asphalt mastic under pressure, comprissurrounding said tank outlet,said tail pipe slidingly fitting inthe adjacent end of said first pipe.

2. Portable apparatus for supplying a stream of heavy asphalt mastic under preuure, comprising a portable carriage, an open mastic supply tank removably mounted on said carriage and having an outlet at the lower portion of said tank, a pump mounted on said carriage adjacent the lower end of said tankya motor mounted on said carriage and driving said pump. a pipe connecting said outlet with the inlet of said pump, a discharge pipe attached to the outlet of said pump, a by-pass pipe connected with the pump discharge and extending upwardly and then laterally to discharge over the upper rim of said tank and into said tank, a valve in the upper part of said by-passpipe and permitting v the flow of mastic therethrough when the pump discharge pressure exceeds the setting of said valve and meansfor regulating said valve.

3. Portable apparatus for supplying a stream of heavy asphalt mastic under pressure, comprising a-portablecarriage, a mastic upply tank a removably resting on one end of said carriage and having an opening in its bottom, a stem se- I said carriage, a pipe connecting said elbow and said pump inlet, a-discharge pipe connecting with said pump outlet, said pipes being in substantial axial alinement and a motor mounted-on said carriage and driving said pump. J

4. Portable apparatus for supplying a stream of heavy asphalt mastic underpressure, comprising a portable carriage, a mastic supply tank removably resting on one end of taid carriage and having an opening in the lower portion of said tank, a pump mounted on the other end ofsaid carriage adjacent'the lower end of said tank, a pipe connecting said opening with the inlet of said pump, a discharge pipe attached to the outlet of said pump, a motor mounted above said pump and alongside said tank and an overhead drive between said motor and pump and arranged alongside said tank and extending over said motor.

5. Portable apparatus for supplying a stream of heavy asphalt mastic under pressure, comprising a portable carri ge. a pair of side posts rising therefrom and arranged substantially midway between the ends of said carriage, a mastic supply tank removably resting on one end of said carriage and having an opening in its bottom.

1 a pump moimted on the other edd of said carriage adjacent the lower end of said tank, a p p connecting said opening with the inlet otsaid pump, a discharge pipe attached to the outlet said posts, a drive connecting one end of said of said pump, a transverse shaft journalled on shaft with said pump, a pulley at the other,

end of said shaft, a motor mounted on said carriage above said pump and a belt drive between said motor and pulley.

6. Portable apparatus for supplying a continuous stream of heavy asphalt masticunder pressure, comprisinga portable carriage having spaced side bars connectedby spaced cross bars. a cylindrical mastic supp y tank arranged vertically on said carriage and having its rim portions loosely resting on said side and cross bars, a tail pipe extending downwardly from the center of said ,tank and forming a discharge spout. a pump mounted on said carriage adjacent the lower end of said tank, a motor mounted on said carriage and driving said pump, a pipe having an upright part slidably receiving said tailpipe and having its other endconnected to the inlet of said pump and a discharge pipe attached to the outlet of said pump. a

'1. Portable apparatus for supplying a stream of heavy asphalt mastic under pressure, comprising a portable carriage, a mastic supply tank removably resting on one end of said carriage and having an opening in the lower portion of 'said tank, a pump mounted on the other end of said carriage adjacent the lower end of said tank, a pipe connecting said opening with the inlet of said pump, a discharge pipeattached to the outlet of said pump, a motor mounted alondside said and an overhead drive between said motor and pump and arranged alongside said tank and extending over said motor.

8. Portable apparatus forsupplying a continuous stream of heavy asphalt mastic under pressure, comprising aportable carriage, a mastic supply tank mountedon said carriage and having a continuously unobstructed outlet in its pump mounted on the carriage adjacent'the. lower end of said tank, a single horizontal pipe having a quick detachable connection with said' outlet and connecting said outlet with the inlet of said pumpand providing constant un0bstructed communication between the mastic in said tank and said pump, a discharge pipe connected to the outlet of said pump, a by-pass pipe connected to the pressure side of said pump and returning the material to the inlet side thereofand a valve in said by-pass pipe and permitting the flow of mastic 'therethrough when the pump discharge pressure exceeds the setting of the valve.

9. Portable apparatus for supplying a stream of heavy asphalt mastic under pressure, comprising a portable carriage, an open mastic supply tank mounted on said carriage and having an outlet at the. lower portion of said tank, a pump mounted on said carriage adjacent the lower end of said tank, a motor mounted on said car'i'iage and driving'said pump, a pipe connecting said'outlet with the inlet of said pump. a discharge pipe attached to the outlet of said pump, a by-pass pipe-connected .with the pump discharge andextending upwardly and then laterally to discharge over the upper rim of said tankandintosaid tank,avalve'intheupper 40 lower portion, a continuous uniform delivery mounted on said carriage and having an outlet at the lower portion oi said tank, a continuous unii'orm delivery pump mounted on said carriage adjacent the lower end oi said tank, a

motor mounted on said carriage and driving said pump, a pipe connecting said outlet with the inlet or said pump, a discharge pipe attached to the-outlet of said pump and a pressure relief by-pass valve connected with said pump discharge and leading to said tank at a point above the level oi. mastic in said tank.

11. Portable apparatus for supplying a stream oi heavy asphalt mastic under pressure, comprising a portable carriage.a mastic supply'tank mounted on said carriage and having an outlet at the lower portion of said tank, a continuous crass uniform delivery pump mounted on said carriage adjacent the lower end of said tank, a motor mounted on said carriage and driving said pump, a pipe connecting said outlet with the inlet of said pump, a discharge pipe attached to the outlet oi. said pump. a by-pass pipe connected with said pump discharge and communicating with the extreme upper portion of said