US1544331A - Wedge - Google Patents

Description

N. L. MALMGREN `june .50, 1925.

L fl '5 l atenten at?,

NELs L. Matrassen, orY CHICAGO, ILLINOIS.

WEDGE.

l Application filed May 2,

! 10 all whom it may Concern v Be it known that I, Nuns L. MALMGREN, a citizen of the United States, and a resident of Chicago, in the county of Cool; and State` of Illinois, have invented an Improved lVedge, of which the following is a specification.

This invention relates to wedges.

The object of the invention is 'to provide wedges which, under contemplated conditions of use will be practically self-locking when subjected to usual stresses tending to cause slipping and loosening thereof.

To attain this object, wedges' embodying my invention and improvements comprise wedges the wedging surfaces of which are inclined both lengthwise and transversely relative to the plane of the vback of the wedgepreferably at the same' angleswdesigned to be used in pairs disposed at an angle to each other-preferably at right angles. Thus, when a pair of wedges is utilized in association with a structure affording rigid abutments at the sides of the transverse wedging surfaces thereof adjacent to the thin or smaller ends of said wedges formed by the longitudinal wedging surfaces, it is obvious that when the wedges are forced endwise, components of force will be produced tending to impart coincident lateral movement to one or both of said Wedges which, if continued, will bring a side of one or both thereof into strong frictional engagement with the abutments adjacent to V the thin or smaller ends of the longitudinally inclined wedging surfaces thereof, respectively, which will e'ectually present said wedges from working loose under usual conditions.

My invention also comprises the various other features and details of construction hereinafter described and claimed.

In the accompanying drawings, in which nly invention is fully illustrated,

Figure 1 is a perspective view of a wedge embodying my invention and improvements.

Figures 2 and 3 are views of opposite ends thereof.

Figure 4 is a side view showing a pair of my improved wedges assembled for use in a supporting base affording suitable lateral abutments; and

Figure 5 is a top plan view thereof.

Describing a wedge embodying my invenr tion and improvements with particular reference to Figs. 1 to 3 of the drawings, 1 des- 19224,y Serial No. 710,694.

ignates the wedge, the wedging surface of which is inclined Vboth longitudinally,as shown at 2, and transversely as shown at 3 relative to the plane of the back of the wedge. My improved wedges are designed to be used in pairs disposed at an angle to each other-preferably at 'right angles-in association with a structure which affords lateral abutments at the sides thereof adjacent to the thin or entering Vends of the longitudinal wedging surfaces of said wedges, respectively, whereby when said wedges are forced endwise, the transverse wedging surfaces thereof will produce components of force tending to' impart lateral movement to said wedges towards the thin or entering end of the other wedge which,

if continued, will bring a side of said wedge into strong frictional engagement with the abutment adjacent thereto. j

For purposes of clear and definite illustra' tion, I have, in Figs. 4 and 5 of the drawdesignated 1, 12, respectively, in association 80 with a base portion designated as a whole 4, as applied in use for Supporting a Weight, indicated diagrammatically at 5, Fig. 4, j which may typify any kind of a load to be l raised or supported by said Wedges.

The base portion 4 consists of a lower portion or base proper 6 formed on which are upwardly extending lugs or projections 7, whichV define grooves or slots 8, 8 which preferably extend at right angles to each other and in which the wedges 1, 12 are confined, the lower wedge l being shown seated on the bottom of the groove 8 and the wedge 12 being seated upon the wedge 1 with their wedging surfaces in contact.

The slots'or grooves 8, 8', are slightly wider than the wedges l', 12.

The wedges 1, 12 are shown supporting a Weight 9, indicated diagrammatically, and which may typify any kind of load sustained by said wedges.

With wedges constructed and applied as described, it is obvious that when said wedges are forced endwise either to force them in or out, the laterally inclined surface 3 of each wedge, acting on the longitudinally inclined surface 2 of the other wedge will produce components of force tending to impart coincident lateral movement to said wedges towards the thin or entering end of the other wedge which, if continued, will bring the sides of said ings, shown a pair of my improved wedgesinm. i

wedges respectively ,adjacent to the smell end of the other Wedge, into strong frictional engagement- With the lugs or projections 7 on the base 4Which Will eil'ectively prevent said Wedges fromV becoming loose under any Stresses to which they Will be subjected in ordinary use.V

It Will be understood that the :base 4k merelyrexemplilies any structure which 2liords lateralyabutment-s for Wedges applied .in the' manner shown and described, adupted` .to lprevent seid Wedges from workingloose.

. I do not, therefore, desire to limit myself Y ,f 1. Wedges, each comprising-a'planevveflg-V y to the-particular Vstructure or VVapplication shown, but claim the use of .wedges embodying my invention and imp-comments in con` neet-ion with `any Structure to `Wl1ichvit may be applied in manner to produce the results contemplated.

I claim of the back of .the Wedge, designed to be used in pairs disposed at an angle to each Vother with their VWedging surfaces yin con`r tact. l

` 2; Wedges as speciiedin cla-im l, in whichV the corresponding Wedgmg surfaces of different Wedges are inclined at the Vsame angles. "j

the angles of inclination of the Wedging surfaces are the sameboth longitudinally and trim'sversely.y Y

4. Wedges as specified claim 1, i

' vday of April, A. 1924.

s NELS L. MALMGREN. f

lng surface which isfinclined both lengtlij Wise and transversely relative to the plane 3. YVedges as specified in claim 1', in which

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