US 961780 A
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Description (OCR text may contain errors)
C. A. LAUZON.
BOX COVER FASTBNEE.
APPLIGATION FILED AUG. 24, 1909.
atented une 2l, 1916.
v. 52521. Fix
whre/aseo `CALVIN A. LAUzoN, or GRAND RAPIDS, MICHIGAN.
Application filed August 24, 1909.
ers, of which the following is a specification.
This invention relates to improvements in box cover fasteners.
My improved fastener or latch is especially designed by me for use on tireless cookers where a clamping action in securing the cover is desirable in order to secure as per- 'fect a joint as possible although it is desirable and adapted for use in other relations where a clamping latch or fastener 1s de- Vsired.
The main objects of this invention are to provide an improved fastener or latch which is effective in clamping and securing the parts to which it is applied together, and one which may be mainly formed of sheet metal stampings.
Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.
I accomplish the objects of my invention by the devices and means described in the following specification.
The structure described constitutes one effective embodiment of my invention. Other embodiments would be readily devised by those skilled in the art. Y
The invention is clearly dened and pointed out in the claims.
A structure constituting an effective and preferred embodiment of the features 0f my invention is clearly illustrated in the accompanying drawing, .forming a part of this specification, in which,
Figure 1 is a side elevation of a structure embodying the features of my invention, the body and the cover of the structure to which my improved latch is applied being shown in conventional form, the fastener being shown engaged. Fig, 2 is a similar view of the latch or fastener disengaged. Fig. 3 is a detail vertical section taken on a line corresponding to the broken line 3-3 of Fig. 1. Fig. t is a detail section taken on a line corres onding to line 4-4 of Fig. 1. Fig. 5 is a etail side elevation of a modified structure. Fig. 6 is a detail section taken on a line corresponding to the broken line 6 6 of Fig. 5.
In the drawings, similar reference char- Specicaton of Letters Patent.
Patented June 21, 1910.
serial No. 514.347.
acters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows atthe ends of the section lines.
Referring to the drawing', l represents the body and 2 the cover of a fireless cooker or like receptacle, the same being shown in conventional form only.
My improved latch or fastener consist-s of a supporting plate 3 on which the lever-like finger piece 4 is secured by means of the pivot 5. The linger piece is preferably provided with an out-turned portion 6 for convenience in grasping. The keeper 7, is preferably in the form of an angle plate to engage the edge of the cover, the plate being secured to the cover by means of the screws S arranged through the horizontal parts thereof. The plate 3 is secured to the body 1 by means of the screws 9. The engaging member 10 of the latch is mounted by means of the pivot 11. The member 10 is hook-like to engage the projecting stud-like member 12 of the keeper. The plate 3 is provided with a stop 13 against which the linger piece 4. is
swung when the latch is engaged. This stop posed relative to each other that the pivot for the keeper engaging member 1s swung past the center of the keeper and the finger piece pivot in engaging the latch so that a clamping action is had on the keeper drawing the cover down and retaining it until the finger piece is again swung to carry the pivot 11 past the center line to the pivot 5 and the keeper stud as stated. The engaging member 10 is preferably provided with a projecting finger piece 14.
The supporting plate 3, the linger piece 4, the keeper plate, and the engaging member 10 are all preferably formed of sheet metal stampings as when thus formed they are economical to produce and the structure is very compact.
My improved fastener is very easy to engage on account of the toggle-like eect or action secured by thus arranging the parts and, as stated, when the parts are in their engaging position With the finger piece against its stop they are secured in that position as any pull or strain on the cover merely tends to draw the linger piece more firmly against its stop, thus the latch not only serves as a clamp but as a locking latch which is quite unlikely to be accidentally disengaged or freed.
As previously remarked my improved latch is very economical to produce and is at the same time, very strong and convenient to manipulate.
In the modified structure shown in Figs.-
5 and 6, the keeper 15 is in the form of a screw and the engaging member of the latch is slightly modified in form. This structure is somewhat more economical to produce than that shown in Figs. 1 to 4.
Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:
l. In a fastening device, the combination with a keeper, of an attaching plate; a leverlike finger piece pivotally mounted on said plate; a hook-like keeper engaging member pivotally mounted on said finger piece; said finger piece and keeper engaging member being arranged to swing in planes substantially parallel with the face of the said plate; and a stop on said plate for said finger piece, said stop and keeper and the pivots for said finger piece and keeper engaging member being so disposed relative to each other that the pivot for said keeper engaging member is swung pastthe center of said keeper andA the finger piece pivot, whereby a clamping movement is applied to the keeper engaging member and the parts retained in position when the finger piece is swung against said sto 2E.) In a fastening device, the combination with a keeper, of an attaching plate; a leverlike finger piece pivotally mounted on said plate; a hook-like keeper engaging member pivotally mounted on said finger piece, said finger piece and keeper engaging member being arranged to swing inplanes substantially parallel with the face of the said plate; said hook-like keeper engaging member being provided with a laterally projecting finger piece; and a stop on said plate for said finger piece, said stop being also adapted to serve as a rest for said engaging member.
3. In a fastening device, the combination with a keeper, of an attaching plate; a leverlike finger piece pivotally mounted on said plate; a hook-like keeper engaging member pivotally mounted on said finger piece, said finger piece and keeper engaging member being arranged to swing in planes substantially parallel with the face -of the said plate; said hook-like keeper engaging member being provided with a laterally project-- ing finger piece; and a stop on said plate for said finger piece.
4. In a structure of the class described, the combination with a body and a cover, of a keeper consisting of an angled body portion arranged to engage over the edge of the cover and having a projecting stud-like engaging member thereon; an attaching plate secured to said body; a lever-like finger piece pivotally mounted on said plate; and a hooklike keeper engaging member pivotally mounted on said finger piece the pivots for said finger piece and keeper engaging member being so disposed relative to each Qther that the pivot for said keeper engaging member is swung past the center of the keeper and the nger piece pivot whereby clamping movement is applied when the parts are swung to their engaging position.
In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.
CALVIN A. LAUZoN.` [as] `Witnesses:
PEARL M. WEIGHTMAN, L. S. WALLACE.