US1094531A - Combined level and plummet. - Google Patents

Description

A. L. GOASH. COMBINED LEVEL AND PLUMMET.

Mb h A L. Coda/i,

Patented Apru28,1914.

I VIII/fl fvflluflll 4' APPLIOATION FILED T11R24, 1913.

wane/Mao To all whom it may concern:

of'lndiana, have invented certain new an like.

ARTHUR L. coasn, or HAMMOND,

INDIANA.

COMBINED LEVEL AND PLUMME/I'.

Specification of Letters Patent.

Patented Apr. 28, 1914.

Application filed February 24, 1913. Serial No. 750,242.

1 3e it known that I, ARTHUR L. Coasn, a citizen of the United States, residing at Hammond, 1n the county ofLLake and State useful Improvements in Combined Levels and Plummets, of which the following is a specification.

My invention relates to a combined level and plummet.

An important object of this invention is to provide an apparatus of the above mentioned character, which is simple in construction, cheap to manufacture and durable.

A further object of this invention is to provide means whereby the reflector ror may be accurately adjusted to a'desired angle and held at such adjustment without liability of accidental I displacement.

A further object of this invention is to rovide means whereby the different parts of the apparatus may be readily removed from or inserted into their operative positions.

Other objects and advantages of this invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a plan view of the apparatus, Fig. 2 is a side view of the same, Fig. 3 is a central longitudinal sectional view therethrough, parts being shown in elevation, Fig. 4; is an elevation of one end of the apparatus, and, Fig. 5 is a similar view of the opposite end.

In the drawings, wherein for thesake of illustration, I have shown a preferred bodiment of my invention, the numeral 6 designates a block, stock or body portion of the apparatus, which is preferably formed of wood and has its opposite ends protected by heads 7 and 8, which are preferably formed of metal, such as brass, copper or the The head 7 is provided with an opening 9, in registration with a longitudinal opening 10 extending parallel with the longitudinal axis of the block or body portion 6, as shown. At its inner end the longitudinal opening 10 leads into an enlarged opening or chamber 11, as shown.

Rigidly mounted within the lower portion of the chamber or opening 11 is a holding bracket 12, which is held in place by screws 13 or the like, as shown. This holding 1' 15 is abracket 16, the

bracket 12 comprises upstanding spaced ears or lugs 14:, between which is mounted a reflector or mirror 15. Mounted upon the upper or opposite end of the reflector or mirror forked end of which snugly receives'said reflector or mirror, as shown. The outer portion of the bracket 16 1s apertured for receiving therethrough an ad usting screw 17, operating through a screw-threaded opening formed in a plate 18, as shown. This plate 18 is held in place by screws 19 or the like. Disposed below the reflector or mirror 15 is a suitably stiff and compressible curved or bored leaf-spring 20, the free ends of which engage the reflector or mirror, as shown. The lower end of the leaf-spring 20 preferably extends into the opening between the lugs 14, as shown. The leaf-spring 20 is always under tension, whereby it serves to hold the reflector or mirror 15 outwardly in the desired angular position; It is obvious that by turning the adjusting screw 17, the angular position of the mirror 15 may be slightly varied, which is important when the same is being adjusted to the desired angular position at which it is to remain when the apparatus is in, use. The reflector or mirror 15 is shown as arranged at an angle of 15 to the horizontal but it is to be understood however thatthe same may be moved to any other desired angular position.

Disposed inwardly of and adjacent the opening'9 is a sight plate 21, which is preferably semi-circular and is provided at its center with a relatively small opening 22. The upper portion of the chamber or opening 11 is normally closed by a horizontal plate 23, which is preferably formed of metal, such as copper. brass or the like. This plate is held in place by means of screws 24. or the like. The plate 23 is provided with an opening 25 disposed at a right angle to the opening 9. Disposed inwardly of the opening 25 and adjacent the same is a second sight plate 26 which is preferably. semi-circular and is provided at its center with a relatively small opening 27.

The plate 23 is provided with a longitudinal opening 28, through which may be seen a screw 33 or the like. An-adjusting screw 34 passes through the opposite end of the support 29 and o crates through a screwthreaded opening ormed in a fixed plate 35, which is held in place by screws 36 or the like. A section of rubber 37 or the like is preferably interposed between the support 29 and the plate 35. It isthus seen that by proper manipulation of the screw 34 the support 29 may be accurately adjusted to assume a position parallel with the longitudinal axis of the block or body portion 6. Disposed upon the opposite sides of the block or body portion 6, is a curved plate 38, having an enlarged opening 39 formed therethrough, whereby the spirit level de-' vice may be readily observed from the side of the apparatus. From the above disclosure it is obvious that the spirit level device may not only be pro erly an arly ad'usted but may be rea ily rem ila d when desired.

Formed through the end of the body portion or block 6 adjacent the head 8 is an enlarged transverse opening 40, having its upper wall curved and its -'lower wall 41 straight and disposed at a right angle with relation to the longitudinal axis of the block or body portion 6. The opening 40 leads into a horizontal opening or recess 42, as shown. The horizontal o ening 42 is normally closed by a remova le plate 43, held in place by screws 44 or the like.

The numeral 45 desigates a vertical spirit level device of any well known or preferred type but preferably comprising a support 46, carrying a shell 47 which holds a transparent or glass tube 48 containing the spirit liquid. The support 46 has its upper end bent to form a horizontal extension 49, disposed at a right angle thereto. This horizontal extension is detachably connected with a horizontal wall 50 by means of a screw 51 or the like.

It IS obvious that the vertical spirit level device may be readily removed. Should the same for any reason lose its angular adjustment, the trouble may be overcome by removing the same and properly angularly adjusting the extension 50 with relation to the support 48, subsequently to which the spirit level device may be returned to its operative position. Disposed upon the opposite sides of the walls of the body portion or block 6 are protecting. plates 52, whichsurround the opening 40, as shown.

In th tal spirit level deviceis employed to ascertain whether a sill or the like is horizontal and the vertical spirit level device is employed to determine whether a corner post or the like is perpendicular.

It is to be understood that the form of my invention herewith shown and described, is to be taken as a preferred example of the same, and that certain changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claim.

Having thus fully described my invention, I claim Apparatus of the character described, comprising a supporting element, a bracket attached to th vided with an outwardly extending flange, a reflector having one end thereof engaging and disposed upon the inner side of the flange, a second bracket having holding engagement with the opposite end of the reflector, adjusting means connecting the second bracket with the supporting element, and a compressible longitudinally curved leaf-spring arranged between the reflector and the supporting element with its ends engaging opposite ends of the reflector to exert outward yielding pressure thereon.

In testimony whereof I aflix my signature presence of two witnesses.

ARTHUR L. OOASH.

Witnesses:

E. G. SPROAT, EMMA E. Gums.

e supporting element and pro e use of the apparatus, the horizon-;

Images