US1820948A - Pressure can - Google Patents

Description

Sept. 1, 1931. H. J. H. NATHORST PRESSURE CAN Filed Feb. 27, 1929 Hl/orney.

Patented Sept. 1, 1931 ATE into their cylinders or into passageways nAnnY JOI-IA'N HJALMAR narnonsrfon smooxnonrr, swnnEN, ASSIGNOR TO AKTIE- Bernese nonnrsnng'smmrnnrennixnmm, or s'rocKHoLM, SWEDEN, A com-E 341w neeement]; In: swnnr'n PRESSURE CAN Application filed February 27, 1929, Serial No. 343,001, and in Sweden February 28, 1928. d

Of late it has become increasingly usual to 'lubricate pneumatic tools, rockxdrills, coal pick hammers, and so forth, by introducing bordering. the same,-certain kinds of ,so-

I called thick or consistent grease, that is to say,-more or less viscous lubricants. Hitherto there has been a want, however, of a handy and easily transportable grease can or lubricator for this purpose. In order that such a grease can shall-be fully suited .to its purpose, it should be such, at least whenfinadein small sizes, that it can be carried in the pocket, and for this reason, i-nter'alia, it should be so constructed that no grease will bepressed out of the can when it is not iised, even if the can is inadvertently sub ected to pressure. Furthermore, the spout of the can should be, arranged 111 such manner that, it is protected against damage as far as possible, when the can s not used;

".Now, the present inventionrelates to a pressure can which fully answers theserequirements, and which-is capable of being used not only for-lubricating the above mentioned and otherniachines with lubricating, vgrease, but which may also be used with advantage for portioning out other plastic pastes or bodies.- The improved pressure can or grease gun comprises a can for receiving lubrieant orpaste', and a-slidable bottom in said can, and is'principally characterized by that the spout is slidalrly mounted in said can as well as llluSRlCl'bOfillOlll in such .nianner that the spout may'be pulled out .to project beyond the can andmaybevpushed into the can, said spout bein provided with at least one openingjwlthin said can "located in {such manner that: inthegpulledout. position of the spout said opening affords-commi'inicationbetween the interior of the can and the spout,wh1le1n the pushed-1n position of the spoutsaid opening is covered by thebottom so that thesinterior of the can is shut off from communication with the spout.

u 1 This arrangement; suitably carried out :in such mannerthat the spout is 'sli dably mounted in the cap of the can,f,and isprovided within the can with oneor more side openings, while the slidable bottom is provided with an opening in which thespout lits tightly, so that the bottom may be pushed in over the spout for the purpose of pressing out the grease or paste. a

An embodiment of the invention is illustrated in the accompanying drawings, by way of example. Fig. l is a longitudinal section through a pressure can or grease gun according to the invention, and Fig. 2is a side view of the same. o The grease or paste to be portioned out is kept in the-space 1 which, is enclosed by the cylindricalcan shell 2, bottom 3, cap 4, and

one or more longitudinal slots which are engaged by screws 11 screw-threaded through the can shell 2, so that saidscrews and slots limit the sliding motion of the bottom Sin the can. Secured tothe spout ,5, which'is provided with abottom 12, are a guide ring 13 and a stop ringl t ofequal diameters, the former of which serves to ,guide the spout in the tube 9, while the ring 14 serves as a stop for the spout when pulled out through the cap, 4.,

5 The cap 4, which may suitably be provided with a 'nurled "edge, is shown as adapted to be attached to the can 2 by means of a bayonet lock, consisting; of pins 15 secured tothe can wall and which engage? angular slots'16 in the can The cap can thus easily be takenofl? and puton. The spout 5 1'5 sl'rdable inn central openlng 1n :the cap 4. so that itv may be pulled out and pushed in, its outward movement being limited by the stop ring 14 as above ex- ,plained, and its inward movementvbeing .limit-edby its nozzle 17;} ,A packing, ring 18 of feltis providedlin the cap .andserves to prevent the grease from passing, out

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sure or vacuum arising in the tube 9 when the spout is displaced.

pushing the bottom 3 so far down as slots 10 andscrews ill will admit, The sleeve is now turned relatively to the can The" grease ean 'is made readyfi'or use by takingofi the Cap 4 with the spout 5, and by the 2; so that the screws II engage the upper lateral portions of the slots 10, and thus prevent the can 2 from moving downwards by its own weight, when the can is placed on the bottom 8.- As wooden pin, iron rod, or the like, is now inserted in the tube9 in order to prev nt a lubricant from passing down into said tube. The space 1. is now filled with grease which'isquiteeasily done, sincesaid spacehas a comparatively small depth in proportion to its width.

When the space" It has been filled, theabove mentioned in or the hke'is removed, the spout- 5- is' carefully pushed into the tube 9, and the cap 4 is put on" andsecu-red by the aid of the above mentioned bayonet lock.

Finally, the sleeve 7 is turned back so far that it can freely be movedinthe axial direction thecan When the grease can' is afterwards to'be used the spout- 5 is pulled outso far that the stop ring 14 comes to bear against the side of the-tap 4, after which pressure is a pIi'ed to the bottom 8. The rease is thereby pressed from the space '1 throu h the opening 6 into the spout 5 and out though said spout and the nozzle 17 to the grease hole of-the machine or apparatus in question. When the" can is no more to be used, the spout 5') is again pushed in as far as the nozzle 17'wi1l admit. The spout new projects so little outside the captlia't it is protected against damage as far as possible, and the openings 6' are closed by the wall of thetdbee', so thatno grease can be pressed. out of "the can when the spout is pushed into the same; V

- It will thus be evident that the can is very easily filled as we-11' as convenient to handie,

owing to thespoiut being adapted to be pushed in, and'when pushed in, also closing the The can may thus easily be transported without risk of any" portion of its eontents flowing out if theme is inadiii a ocket without risk.

vertently' upset, or'if the bottom 8' is inadvettentlysubjeeted topressure When made in'a suitable sizethe can can thus be carried In certain cases, when lubricating grease be other pastes are concerned, the same may be so viscous that more force is re uired in I order-to press outthe same than what can leonv nientiybe produced by pre sure applied directly tothebot'tom 81; Insuc'h cases Ithemn walla may b provided, f r instance,

with interior threads, and the sleeve 7 with exterior threads, and the bottom 3 may be forced inwards as required simply by turn viding the can 2 and sleeve 7 with screw- 7 threads, a strap maybe rigidly or pivotally attached tothe' can 2", such strap extending outside the bottom 8, and a screwo'rrotatable eccentric disk may be provided in the same by means of which the sleeve 7 and [bottom 3 may be forced inwards into the can. I b

In the embodiment'illustrated the can is supposed to have a" circular cross section, but it will be understood that it may also be made an oval or edged cross section.

- I claim: Y

1. In a pressure can, the combination of a can for receiving lubricant or other paste, a bottom slidable said can, and a substantia'lly tubular spout slid'ably mounted in said can as well as in said bottom in such manner that said spout may be pulled out to proj ect-beyond'said can and may be pushed intothe can, said spout being provided with at least one opening within said can located in such manner that in the pulledout position of said. spout said opening aiiord-"s communication between the interior of 'said can and said spout while in the pushed-in position of said spout said opening is covered by said bottom so that the interior of said can is shut off: from communication with said spout.

2. In a pressure can, the combination of a can for receiving lubricant or other paste, a bottom slidable said can, a substantially tubular spout slidably mounted said can as well as in said b'Ott'Om in suc'h .-manner that said spout may be pulled out tobprop'osition'of said spout said opening-affords communication betweenthe interior of said can and said spout while in'the pushed-in position of said spout said opening is covered bysaid bottom so that the interior of said can is shut on from communication wit'h'said' spout,--and a stop ring attached.

to said spout and adapted to limit the outv ward displacement of said spout relatively" to said can, said spout having such length that in such position it still retains engagement with said bottom.

In a pressure can, the combination of a can for receiving lubricant or other paste,

abottom sl'idable in said can, a substantially tubular spout slidably mounted in said can as well as in said bottom in such manner that said spout may be pulled out to project beyondisaid'can and maybe pushed into the can, said spout bein'gprovided with at least one opening Within said can located in such manner that in the pulled-out position of said spout said opening affords communication between the interior of said can and said spout While in the pushed-in position of said spout said opening is covered by said bottom so that the interior of said can is vided with a least one opening Within said can located in such manner that in the pulled-outposition of said spout said opening affords communication between the interior of said can and said spout While in the pushed-in position of said spout said opening is covered by said bottom so that the interior of said can is shut off from communication With said spout, a sleeve attached to said slidable bottom, said sleeve having at least one longitudinal slot, and at least one screw screw-threaded through said can and engaging such slot.

HARRY JOHAN HJALMAR NATI'IORST.

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