US1568139A

US1568139A - Struction co

Info

Publication number: US1568139A
Authority: US
Publication date: 1926-01-05
Anticipated expiration: 1943-01-05

Description

Jan.5,`1926. 1,568,139

c. L. DEWEY K DEVICE Fon FEEDING COMMINUTED MATERIAL To A coNDuIT Filed Feb. 23, 192s ya /0f`q+- ZZ @W I /F I l ,/slby 6 /V//l/r//- Z/(/ 'Il Il f manita im. s, 192s. j

UNITED STATES PATENT OFFICE.

CLARENCE I.. DEWEY, or -WI'LMETTE ILLINOIS, AssIoNon 'ro CEMENI` GUN coN- s'rnuc'rIoN Co., or CHICAGO, ILLINOIS, A CORPORATION 0E ILLINOIS.

DEVICE FOR FEEDING COMMINUTED MATERIAL '10 A CONDUIT.

Application ledebruary 23, 1923. Serial No. 620,667.

To all whom it may concern;

Be it known that I, CLARENCE L. DEWEY, a citizen of the United States, residing at Wilmette, in the county of Cook and State of Illinois, have invented Vcertain new andI useful Improvements in Devices for Feed- .ing Comminuted Material toja Conduit, of

' no provision made for cleaning the hose wheel and t ofthe wheel are brought, in turn, under the or conduit of masses that mayaccumulate therein to an extent that substantially closes the hose.

Furthermore the charge containing wheel into which charges of sand and cement are deposited does not make air tight connection with the feeding means, resulting in considerable loss of air and variation of pressure.

My improved device overcomes the above mentioned objections without changing the principle of operation of said prior device and providesV additional means by which to apply the full force of the air under` preure to the cleaning operation and. convenient means for packing the relatively moving parts containing the sand and cement.

One of the objects of the invention is to improve feeding and cleaning devices for cement guns.

Another object is to provide, in a device of the character described, means for bypassing the feeding device and applying the full pressure of air to the conduit to clean it.

A further object is to provide an improved means of ackin the charge-containing he fee ing device as the pockets feeding device. j

Another object is generally to improve devices of this character. l'

Other objects and advantages will hereinafter appear.

In the drawings Fig. 1 is a longidutinall central-section taken substantially online 1--1 of Fig. 2.

' established thru port 21 and Fig. 2 is a transverse section taken von line 2--2 of Fig. 1.

, F ig. 3 is a section taken thru the cowl on line 3-3 of Fig. 1.

Fig. 4 is a transverse section thru the cowl taken on line 4-4 of Fig. 3.

Fig. 5 is a 1an view of part of the charge holding eed wheel.

In all the views the same reference characters are used to indicate corresponding parts. v

I have shown only parts of the device which are directly concerned with the feeding mechanism. The means for driving the parts; for compressing air and for loading the charge-containing wheel are not of present interest. Y

A plart of the frame which supports the c arge-containing wheel 11 also supports a fitting 12 secured thereto by proper means.

There is an opening 13 in the frame 10 closed by the fitting 12 and thru which a cowl-like part 14 projects.

The wheel 11 is driven intermittently and blown into the hose or conduit 16. A con-` duit 17 communicates with the cowl 14 and thru a hose or pipe 18 it is to be connected to a source of air supply (not shown) which furnishes air under pressure to shoot or blow the cement and sand thru the conduit There is an opening 19 which continues Athru. the rotary valve 20 into the pocket 15. There is a by-pass 2l between the passage 17 thru valve opening 20 to the conduit 16. This by-pass is shown to be closed so that the air from 17 will blow the charge to be contained in ocket 15, thru valve 20 into 'conduit 16 with the valve ha'ndle 22 in position shown in full lines.

When it is desirable to clean the hose the handle 22 is raised to vertical position, shown in broken lines, whereupon communication between 15 and 16 will be closed and communication between 16 and 17 directly port 2l.

' A sheet of yielding material, suclr j as leather or rubber 24 1s placed around the cowl 14.- with its' lower edge in Substantial contact with the upper ed e of the wall of the cowl 14 partly surroun ing each pocket, to prevent the air from escaping from the air conduit. The sheet 24 is held in place by a strap 25 and screws 26.. f

Having described my invention what I claim as new and desire to secure by Letters Patent, isz- 1. A- device of the character described comprising a charge holder for comminuted material; a conduit thru which the material is to be passed; means for introducing air under pressure to move the charge and a valve arranged to close the charge-holding container and to by-pass the container providimlr a direct path into the conduit.

2; device of the character described comprising a rotatable wheel having a plurality of charge-holding pockets, intermittently moved to an extent equal to the width of a pocket; a cowl overlying the successively positioned pockets; a yielding packing to close the space between the cowl and positioned pockets; a conduit in communication with the positioned pocket; an air conduit communicating with the cowl to blow a charge into the conduit and a valve to connect the two conduits together and to by-pass the cowl and the chargeholding pocket.

In testimony whereof I hereunto subscribed my name.

CLARENCE L. DEWEY.