US2755556A

US2755556A - Saw construction

Info

Publication number: US2755556A
Application number: US264771A
Authority: US
Inventors: Lindenbein Edwin Emil
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-01-03
Filing date: 1952-01-03
Publication date: 1956-07-24
Anticipated expiration: 1973-07-24

Description

y 19.56 E. E. LINDENBEIN .sAw CONSTRUCTION Filed Jan.

Fig-l ,32 64 Fig.2

W a 6i 4 Edwin Emil Lindenbein INVENTOR.

9 BY Wm.

ite States Pate 2,755,556 Patented July 24, 1956 SAW CONSTRUCTION Edwin Emil Lindenbein, Los Angeles, Calif.

Application January 3, 1952, Serial No. 264,771

1 Claim. (Cl. 33-75) This invention relates to new and useful improvements in saw structures and more particularly to saws having measuring facilities combined therewith, such as that disclosed in my copending application Serial Number 184,546, filed September 13, 1950, now Patent No. 2,677,184, granted May 4, 1954.

The primary object of the present invention is to provide a saw having the necessary elements combined therein to permit use of the saw in determining angles, laying oif straight lines, arcs, circles, and for squaring and levelmg.

Another important object of the present invention is to provide a novel and improved handle attachment for saws that will pivotally support a protractor which is movable into a recess in the handle to provide a straight extension for the straight edge of a saw.

A further object of the present invention is to provide a saw structure capable of replacing a plurality of relatively large and bulky instruments necessary for construction workers and which saw structure is extremely light in weight to facilitate the convenient handling thereof.

A still further aim of the present invention is to provide a saw of the aforementioned character that is simple and practical in structure, strong and reliable in use, small and compact in construction, inexpensive to manufacture, and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals are employed to designate like parts throughout, and in which:

Figure 1 is a side elevational view of the present invention;

Figure 2 is an enlarged fragmentary top plan view of Figure 3;

Figure 3 is an enlarged fragmentary side view similar to Figure 1 but showing the protractor pivoted to an inclined angle relative to the straight edge of the saw, and with part of the handle broken away to show the pivot means housed in the handle;

Figure 4 is a side elevational view from the opposite side of Figure 3; and,

Figure 5 is an enlarged vertical sectional view taken substantially on the plane of the section line 55 of Figure 1.

Referring now to the drawings in detail, wherein for the purpose of illustration, there is disclosed a preferred embodiment of the present invention, the numeral represents a saw blade having its enlarged rear end received in a slot 12 in the forward end portion of a handle 14. The rear end of the blade is formed with a plurality of apertures 16 that register with apertures 18 in the handle.

Bushings 20 are fitted in the apertures 16 and receive fasteners 22 whose heads are positioned in large recesses 24 in the side faces of the handle. One pair of registering apertures 26 in the handle and blade receive a pair of threadingly connecting fastener-halves 28 whose headed ends enter countersinks 30 in the side of the handle.

Saw blade 10 is provided with a straight back or upper edge 32 to permit use of the blade in taking lineal measurements and as a part of a square and protractor. Longitudinally spaced notches 34 in the edge 32 are disposed in six inch lengths for use with or independently of a combined square, protractor and ruler member 36 whose fiat edge element 38 is graduated in inches and fractions of inches up to and including six inches.

A flange 40 forms part of member 36 and extends at right angles thereto. Flange 40 is formed with a lateral projection 42 at one end that is pivotally secured within the front end of slot 12 adjacent the edge 32 by the pivot 28. A spirit level 46 is supported on the underside of element 38 opposite the end thereof that is longitudinally slotted to accommodate the edge 32 when the member 36 is pivoted away from the handle.

Means is provided for releasably holding the member 36 adjusted about its pivot 28 and this means comprises a bolt 48 that is secured to the handle and which passes through an arcuate slot 56 in projection 42. The threaded end of bolt 48 enters a recess 52 in one side of the handle and receivably engages a wing nut 54 that is manually tightened to clamp projection 42 against the rear end of the blade.

Plate portion or projection 42 is provided with quadrant scale 56 on one side adjacent a curved edge 58 thereof which is concentric with the pivot 28. Blade 10 is notched adjacent the quadrant scale to provide a pointer forming edge 60 disposed radially of the pivot.

A long recess 62 in the upper edge of the handle will accommodate the flange 40 and level bubble 46 when member 36 is pivoted against the handle. A blind bore or chamber 63 extends into the handle laterally from the recess 62 and holds removable pointers or

pivots

64 and 66 each of which is formed with a transverse slot and a threaded bore receivably engaging set screws that extend into the slots to bind against the edge of the saw blade received in the slot.

A pivotal plate or closure element 68 is pivotally mounted in the recess 62 and is swingable outwardly from the open side of the recess 62 to permit removal of the

pointers

64, 66 from bore 63. A finger grip 70 on the element 68 forms a convenient means for pivoting the plate into or out of the recess 62.

Handle 14 is integrally formed with a pair of rearwardly extending lugs 72 between which the users hand will be received. These lugs are provided with flat rear faces 74 that lie in a plane perpendicular to the plane of edge 32. The forward edges 76 of the handle 14 also extend perpendicular to edge 14 and are notched to receive the forward end of element 38 so that element 38 will be flush with edges 76 when element 38 is disposed perpendicular to edge 32. Element 38 will be flush with edge 32 when the member 36 is swung into recess 62.

The rear end of member 36 supports a pointer element 78 that projects laterally outwardly from the handle to permit the blade 10 to be pivoted for striking arcs or circles with one of the

pointers

64 or 66 functioning as a scriber.

Blade 11 is formed with a U-shaped notch 80 at its forward end with its transversely disposed edge 82 sharpened to permit use of the blade 10 as a chisel or scraper. When used in this capacity, the hand grip or handle 14 is also employed as a gripping device.

The side faces of the handle 14 are formed with recesses 83 in which charts or indicia bearing plates 84 are mounted. These charts are provided with numerals correlated with the angle markings on the member 36 so that for a given angle, determined by use of the blade 10 and member 36 as a protractor, the length beams for roof pitch may be determined; also the height of any building structure.

By placing the surfaces 74 of the lugs 72 against a vertical or horizontal surface member 36 may be employed for determining angles with respect to surfaces 74 and/or edge 32.

Having described the invention, What is claimed as new is:

A measuring device comprising an elongated straight edge, a handle secured to one end of the straight edge, a protractor having a graduated quadrant pivoted in said handle and an arm on said quadrant, said protractor being swingable on said pivot to project said arm from said straight edge in different angular positions relative thereto, said straight edge having an edge notch forming a pointer radial to said quadrant for registration with said graduations in ditferent angular positions of said arm, said handle having a pair of rear corner lugs provided with flat faces lying in a plane perpendicular to said straight edge for positioning against a surface to space the protractor from said surface in finding different angles relative to said surface with said protractor.

References Cited in the file of this patent UNITED STATES PATENTS Gifford June 10, Callihan Oct. 3, Hamel May 20, Kohler July 28, Regnier Sept. 19, Putney Feb. 16, Matthews Nov. 2, Norquist Dec. 28, Larson et al. Feb. 1, Shaw Apr. 5, Swenson Dec. 13, Hall July 11, Swick May 21, Brooks Aug. 20, Pedersen July 7, Dewees Feb. 27, Desrochers June 26, Palmer May 21, Collins Mar. 30, Balod July 26, Grout Aug. 16, Midgley Apr. 10, Welch Sept. 19,

FOREIGN PATENTS Switzerland May 10,