US1393001A

US1393001A - Oil and grease gun

Info

Publication number: US1393001A
Application number: US386555A
Authority: US
Inventors: Louis E Wood
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-06-04
Filing date: 1920-06-04
Publication date: 1921-10-11
Anticipated expiration: 1938-10-11

Description

L. E. WOOD.

OIL AND GREASE GUN.

APPLICATION FILED JUNE 4. I920.

Patented Oct. 11, 1921.

I I I I I T awvcmioz LUE. Zl/ood UNITED- STATES PATENT OFFICE."

.LOUIS E. WOOD, OF IEA.RRIELI', PENNSYLVANIA.

011. AND GREASE GUN.

To all whom it may concern:

Be it known that I, LOUIS E. Woon, a citizen of the United States, residing at Farrell,

to which it in the county of Mercer and State of Pennsylvania, have invented certain new and useful Improvements in Oil and Grease Guns; and Iv do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in appertains to make and use the same. g

This invention relates to an improved oil and grease gun and one object of the invention is to provide a lubricating guniwhich can be used for oil or grease and which can be easily adjusted to permit the plunger to be moved through the cylinder by a sliding movement or through the cylinder by a rotary movement after the threads of the plunger have been en aged by thread engaging plates.

. nother object of the invention is to provide an improved. actuating element for moving the thread engaging plates into and out of an operative position, the actuating element being rotatably mounted and having a turning stem or neck which extends through a cap holding the actuating element in place.

Another object of the invention is to so construct thisimproved gun that the thread engaging plates and actuating element may be carried by the head closingthe end of the cylinder.

This invention is illustrated in the accompanylng drawings wherein:

Figure 1 is a View showing the improved gun in sideelevation.

Fig. 2 is a sectional view through the upper portion of the gun taken along the line 22 of Fig. 1.

Fig. 3 is a transverse sectional view taken along the line 3-3 of Fig.2.

Fig. 4 is a transverse sectional view taken along the line 44 of Fig. 2.

Fig. 5 is a view showing the thread engaging plates in side elevatlon. I

Fig. 6 is a top plan view of the thread engaging plates. 5

'This improved gun is provided with a cylinder or barrel l which is open at its upper and lower ends and at its lower'end carries a head 2 which forms a discharge nozzle. The upper end of this barrel 1S internally Specification of Letters Patent.

head and in addition the art to be fed longitudinally.

threaded and is closed by a head 7 which is externally threaded and is provided intermediate its length with a collar 8, the collar being milled to permit easy turning of the to permitting easy Patented Oct. 11, 1921. Application filed June 4, 1920. Serial No. 386,555. v

turning of the head limiting movement of the head into the barrel. This head is provided with a passage 9 through which a threaded plunger 10 slidably passes and this passage 9 has its outer end portion enlarged to provide a pocket 11 from the depression of seat 12 formed in the head as shown in Fig. 2. It will thus be seen that since the passage 9 is unthreaded and of greater diameter than the threaded stem or plunger 10 this plunger may be grasped by the handle 13 and moved longitudinally to reciprocate the piston 10 carried thereby fordischarging the oil or grease from the barrel.

When discharging heavy grease from the barrel it is desired to have the plunger moved through the barrel at a relatively slow speed and in order to do so there have been provided plates 14 which are slidably mounted in a groove or seat 15 cutftransverselyin the bottom of the pocket 12 and having arcuate necks 16 which extend into the socket 11 and leading inwardly are internally threaded for engagement with easily and quickly moved to an operative or inoperative position and in order to do so there has been provided a disk 17 which fits into the pocket 12 above the plates 14 and is provided with arcuate slots 18 cut to provide cam slots. Pins 19 extend from the plates 14 into the slots 18 and as the disk is rotated the action of the cam walls upon the pins will cause the plates to be moved into or out of engagement with the plunger according to the direction in which the disk is rotated. This disk is rotatably held in engagement with the head 7 by means of a cap 20 which is screwed upon the threaded upper portion of the head and this cap is provided with a central opening through which extends the neck 21 of the disk, a collar 22 being screwed upon the ex- Y tended upper portion of the neck and milled i the plunger that "the disk can be easily rotated. It will thus be seen that with this improved construction the collar 21 may be grasped and the disk thus rotated to move the plates 17 into or out of engagement with the plun-v ger. If the plates are in engagement with the plunger must be rotated when moving it longitudinally of the valve and therefore heavy grease may be readily forced out of the gun and into a crank casing or gear housing. After the heavy grease has been forced out of the barrel and it is desired to return'theplunger to the upper end of the barrel for refilling the disk will be rotated to move the plates outwardly and the plates will then be out of engagement with the plunger and the plunger may be moved 1011- he barrel can then be refilled with heavy grease and the plates again moved tothe operative position or if it is desired to use the gun for'oil the'plates willbe left in ina What is claimed is:

outer countersunk'portion forming a seat extend-' operative position and the plunger simply pushed inwardly to force the oil through the outlet of the head 2.,

'1. A structure of the character an opening slidably receiving the shaft, the open ng having its outer end portion enlarged and the block being cut from its face to provide a pocket having a ing across the bottom of the pocket about sald opening, a cap for said pocket carried by said block, plates slidably mounted in sides of the shaft and threaded neck extensions opening for engaging the threaded shaft when moved inwardlyto an operative position, and operating means for moving the tudinally "of the barrel by a direct pull.

I described comprising a threaded shaft, a block having plates into and out of an operative position including an actuating element extending throu h the cap.

structure of the character describedcomprising a threaded shaft, 'a block having an opening slidably receiving the shaft,

the block being cut from its-outer face to cam slots, and pins, extending from said plates through the slots of the disk to impart sliding movement to the plates into and out of operative engagement with the shaft" when the disk is rotated through the medium of said neck; v 3'. A structure of the character described comprising .a threaded shaft, a block having an opening slidably receiving said shaft, the block being cut from its outer face to provide a pocket, a cap. for said pocket carried by said block and provided with an opening,

plates slidably mounted in said pocket for movement into and out of engagement with the threads of the shaft, la disk rotatable in said pocket and provided with a central neck extension fitting loosely about the shaft and extending through the opening of the cap, and means for transmitting" sliding movement to the latching plates when said disk is rotated through the medium of neck extension.

lln testimony'whereof have hereunto set my hand.