US1259818A - Grease-gun. - Google Patents

Description

A J woon.

-v GREASE GUN.

APPLICATION msn rss. 21. |911.

1,25 9 ,8 1 8 Patented Mar. 19, 1918.

differential gearing.

A J IOOID, OF GREENVILLE, MICHIGAN.

GREASE-GUN.

Specication of Letters Patent.

Patented Mar. 19, 1918.

Application led February 27, 1917. Serial No. 151,202.

To all .whom itmay concern.'

Beit known that I, A J Woon, a citizen of the Unitedy States of America, residing at Greenville, in the county of Montcalm and State of Michigan, have invented certain new` and useful Improvements in Grease- Guns; and I do hereby declare the following to be a full, clear, and exact description' of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to an appliance for handling greases and the like, especially those greases of a more or less heavy consistency which are used in .lubricating certain parts of the mechanism of motor vehicles such as the transmission and the It is the object and purpose of my invention to provide a device of this character of very simple structure and one which can be economically produced,the inventionl consisting in many novel features of construction and arrangement of parts whereby the functions of the machine are eiiiciently attained. My invention is illustrated in the accompanying.

drawing in which:

Figure 1 is a vertical section taken centrally through the device.

Fig. 2 is a plan view thereof. Fig. 3 is a fragmentary vertical section taken through the lower part of the pump barrel and the coacting seatJ therefor and showing'the relative position of the parts on the upward stroke of the pump piston.

Figs. 4 and 5 are a plan and side View, respectively, ofthe seat member for the lower part of the pump barrel. l

Like reference characters .refer to like parts throughout the several views of the dra-wing. 4 1

In the construction a receptacle 1 is provided having-av bottom 2 the whole being supported by' standards 3jthe lower ends of which are turned outward to make horizon" tal feet 4 against any one of which the foot of the operator may be placed when the device is operated. An opening is made' in the bottom 2 above which is located a member '5 having a relatively large head anda projecting screw threaded shank 6- which extends through the opening in and is secured to the bottom 2 by an elbow coupling 7 screwing on to shank 6. Washers 8 are interposed between the head 5 and coupling 7 and the bottom 2 to make a grease tight connection. The free end of the elbow 7 has a ieXible hose 9'connected thereto as shown.

I The' member 5 ,heretofore described is bored centrally the 'diameter of the bore at lts uppe end being larger than at its lower end and an inclined seat 10 formed at the Juncture of the two bores of different diamet'er. A rod 11 projects upwardly from member 5 and at its upper end is curved in substantially' circular form as shown at 12 making a guide .for the lower part of a cylindrical barrel 13 whichextends the full length of receptacle -l and at its upper end passes loosel through a 'supporting bracket 14 connecte to one side of the receptacle. A plug 15 closes fthe upper end of the barrel. Depending from the plug is a iiexible member 16, preferably' ,of spring' steel, which at its lower end is tur'ned inwardly toward the barrel, forming al .lip 17 as shown. A rod `18 having a handle 1-9 at- 'its upper end passes through the plugl, its lower end carrying a' suitable valveless pis'ton 20.

In operation, thelreceptacle being wholly orA partially filled with a grease and the piston 2O being at the lower end 'of the barrel as shown, in Fig.' 1, to obtain Kgre'se.,-fr'om the receptacle the operator placeshisfoot on one of'the mernbers 4 and pulls upwardly on' the lhandle-'19. The iirst effect is to elevate',the barrel 13 until lip 17 engages against the bracket 14 the lower end of the barrel occupying substantially the position shown in Fig. 3 with an unobstructed space :between the lower end of the barrel Vand the member 5. With the continuation of thev pull on handle 19, rod 18 and piston 20 are', carried upwardly, and the grease is drawn in by suction throu h this o ening below the barrel into 'the arrel. n the downward stroke the first movement that occurs is the dropping ofthe barrel so that its lower end seats against theconical seat 10 closing the opening between the barrel and the member 5 whereupon the further movement of the piston 2O forces the grease outward through the hose 9 to any desired place.

Many changes in minor detail of structure and in the positioning of the barrel 13 with its associated mechanism may be made without departing from the invention. Ac-

cordingly, I do not wish to be limited to the eXact structure shown but consider myself entitled to any and all modifications in structure which come within the scope of .the appended claims dening the inventlon.

I elaim:-

1. A device of the character described, including a receptacle, a member having a passage therethrough secured in the bottom of the receptacle, a conduit connected to and leading away from said member, a barrel loosely mounted above said member, a valveless piston in the barrel, means for raising and lowering the piston, said barrel being elevated with said raising and returned to' lower position on said lowering of the piston, `a tapered seat on said member for the lower end of 'the barrel, a guide means connected to said member and assowciated with the lower end of the barrel to guide the same into engagement with the sea-t, and means limiting the upward movement of the barrel, substantially as del scribed.

2. A device of the character described, including a receptacle, a bracket secured to and extending inwardly from a wall of the receptacle adjacent its upper end, a member having a passage therethrough secured on 'the bottom of the receptacle, a barrel passed loosely through the bracket and havin its lower end normally entered into said passage, a conical tapered seat on the member against which the lower end of the barrel normally engages, a plug closing the upper end of the barrel, a valveless piston in the barrel, a rod secured thereto extending through the plug, a handle en the upper end 'of the rod, and a member secured at the upper end of 'the barrel extending downwardly for a distance and turned inwardly toward the barrel to form a stop to engage against the bracket on upward movement of the barrel, substantially as described.

3. A. device of the character described including a receptacle, a barrel loosely mounted therein; guides for the upper and lower ends of the barrel. a conical tapered seat for the lower end of the barrel, means for limiting the upward movement of the barrel, a bottom to the receptacle having an opening therethrough in alinement with the interior of the barrel, a vflexible hose in communication with said opening, a piston in the barrel, and means for operating the piston, substantially as described.

-l. A device of the character described including a receptacle, a bottom to the receptacle having an opening therein, a member having an enlarged head and a threaded shank, the shank passing downwardly through said opening, said member being interiorly bored, with the boring at the upper end of larger diameter `than at the lower end and an annular inclined seat connectinfv the borings, a cylindrical barrel norma ly entered into the upper part of said member and resting at its lower end on said seat, a guide carried by said member loosely passing around the lower part of the barrel, an elbow coupling screwed on to the shank of the member, a iexible hose connected to the coupling, a bracket secured adjacent the upper part of the receptacle through which the barrel loosely passes, a plug closing the upper end of the barrel, a piston in the barrel, a rod connected thereto passing through the plug, a handle ou the upper end of the rod, and a member connected to the plug extending downwardly alongside the barrel for a distance and turned inwardly toward the barrel at its lower end.

In testimony whereof I aliix my signature.

A d' WOOD

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