US82769A - Justus a - Google Patents

Description

J. A. TRAUT.

Spirit Level.

Patented Oct. 6, 1868.

WfiTnesses:

MPEYERS, PHDTO UTHOGRAPHEI1 WASHINGTON. D c.

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JUSTUS A. TRAUT, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE STANLEY RULE AND LEVEL COM PANY.'OF SAME PLACE.

Letters'Patent No. 82,769, dated October 6, 1868.

IMPROVEMENT IN ADJUSTING SPIRIT-LEVELS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, JUST'US A. TRAUT, of New Britain, co'unty oi" Hartford, and State of Connecticut, have invented certain new and useful Improvements in Levels, for millwrights, carpenters, masons, 83 0.; and to enable others skilled in the art to make and use the same, I will proceed to describe its construction, by referring to the drawings, in which the same letters indicate like parts in each of the figures.

The nature ofthis invention will be understood from the specification and drawings.

The object desired to be attained thereby is to facilitate and cheapen the manufacture of spirit-levels, and to render them less liable to get-broken or out of-or der, and at the same time convenient and easy to be again put in order, when, from any cause, the vials become slightly diverging from a true'horizontal or perpendicular position with the stock, and thereby rendering the whole instrument rich and tasty in its appearance, more merchantable and desirable for useand trade.

In the accompanying drawingsv I Figure 1 is a side sectional view of a level made after this improvement.

a is a spirit-vial placed in position in the stock, just one side-of the sight and counter-bore orifice, whichv serves, with the stock, 6, as a plumbing-instrument. I

a is a spirit-vial arranged in the edge of the stock 6, and serves therewith the purpose of a levellinginstrument. v

The peculiarity of this invention consists in providing the vial-tube c with right-angle plate a, which may be made or east in one piece of metal, or in two parts, and secured firmly together. This tube a may be secured at one end of the plate 0'', or at'any point between its ends. But it is believed that the object of this improvement will be best accomplished by having the plate 0 and tube a cast whole, in one piece of metal, or firmly united together in a right-angle position in the centre of the plate a.

This plate may also he made square, oblong, straight side, with round ends; but it is believed that laborsaving and good taste will be best secured by the shape as shown atA.

Inpreparing the stock for the reception of this tube and plate, three depressions are bored,.which produce the shape of the plate 0', as shown at A, thecentre one a little larger than the twoouter ones, (not necessarily, but as a matter of taste,) and about twice the depth of the thickness of the plate a, (more or less, as

desirable,) so as to allow a yielding material to be introduced between the plates and stock 6. The hole or orifice for the tubeis worked or bored out in the usual-way, a little larger than the tube itself. Then the tube a, elastic packing d, and plate 0, are-introduced into and secured in the stock by means of one or more screws, e. Thus it will be seen that by turning one or the other "of'said screws e, the spirit-vial can be'perfectly' adjusted in a. right-angle position with thestock, and thus produce a perfect plumbing-ins'trument.

' B is a metal case, (st-ruck up or cast in one piece of metal,) formed dishing, and provided with ample room in which to secure the spirit-vial, with plaster of Paris or other suitable material, in the common way of securing them directly in the Wood stock.

The sides of this'case are'cut or curved out in a proper manner, so as to allow of a clear view of the centre of the vial. At each end, and flush with the upper side-of this case, are provided plates ,9, having -hubs 72, through which screw-holes are madefiind countersunk from the upper side, to receive the head of the screws it, nearly or quite flush-with the outer end of ,said hub.

The face'platez'is'provided with orifices to receive the'hubs It.

Figure-2 i-s amodification of fig. 1, in which the adjustable screw-head n is countersunk or fitted into and flush with the face of the plate The screw-end thereof is fitted into the nut or plate g, which is secured to or formed in the plate 9. In one case the spring or rubber pad is is placed between. the caseB and the stock 6. The=object in each case is to elevate or depress one end or the other of the spirit-vial case without changing or removing the plate 2'. i

for the purpose described.

The depression in the edge of the stock 17 is formed (by the use of tools in the common way) the proper shape to receive the body of the case B. Each end of said depression is made the proper depth to receive the springsor packing-pads 7c and plates g.

Now, when these vials are properly arranged in their cases, and are placed in their depressions formed in the'stock, having the pads is between the plates 9 and the wood or stock I), or between the plates iand g, and the outer or face-plate 2', secured in its depression in the usual way, the screws n are then inserted, through the plate 2' and hubs 7L and pads is, into the stock, and turned up closely, so as to secure said case, with its vials, firmly in its proper position, or they are inserted through the plate 2', spring or packing .k, into the nut or plate g. Then, by turning one or the other of said screws, the vial is regulated to a perfectly level position.

Thus it will be seen, that by the use of this improvement greater confidence can be had in the accuracy of the instrument. Besides, they am less liable to be broken by packing, transportation, storage, &c., and reduced to a more perfect system of manufacture. Thus, if a vial is broken, any person of ordinary ingenuity can readily replace and regulate the same for use.

I believe I have thus shown the nature, construction, and advantage of this improvement, so as to enable others skilled to make and use the same therefrom.

1. I claim suspending the vial-case 0 within the stock 6, and adjusting the same to its relative-position with the stock 6, by means of the plate a. screw or screws e, and springs-d, substantially as and for the purpose described.

2. I claim the spirit-vial case B, constructed as described, with the springs 70, screws it, operated through orifices in the plate 2', substantially as and for the purpose set forth.

3. I claim the combination of the adjusting-plate or nuts y, springs k, and screws n, substantially as and JUSTUS A. TRAUT. [L s.] Witnesses N. G. WILDER,

JEREMY W. Buss.

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