US126527A - Improvement in try-squares - Google Patents

Improvement in try-squares Download PDF

Info

Publication number
US126527A
US126527A US126527DA US126527A US 126527 A US126527 A US 126527A US 126527D A US126527D A US 126527DA US 126527 A US126527 A US 126527A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
stock
square
metal
wooden
ordinary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Publication date
Grant date

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00Instruments as specified in the subgroups and characterised by the use of mechanical measuring means
    • G01B3/56Gauges for measuring angles or tapers, e.g. conical calipers
    • G01B3/566Squares

Description

HENRY DISSTON 8L JOAB MORSSi Improvement in Try-Squares.

I N0.126,527, Patented May7,1872.

Fla!

" e ,s: d i

HENRY DISSTON AND JOAB MORSS, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN TRY-SQUARES.

I Specification forming part of Letters Patent No. 126,527, dated May 7, 1872.

Srncnrroarroir.

We, HENRY DrssToN and J OAB Morass, of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented an Improved Square, of which the following is a specification:

Nature and Object of the Invention.

Our invention consists of a mode (described hereafter) of fitting a wooden block to the metal stock of a square.

Description of the Accompanying Drawing.

General Description.

In making ordinary squares it is the practice to secure the steel blade directly to the wooden handle or socket by means of screws or rivets. However sound and dry the wood of the handle or stock may be in the first instance, it is liable to become warped and distorted either by hard usage or by exposure to alternate wet and dry atmospheres. These distortions are especially liable to take place after the wood has been planed or otherwise faced for the purpose of truing the square. In ordinary squares of the better class it is usual to face the inner edge with strips of brass secured to the wood, and to sometimes partially cover the latter with thin metal; but even these strips and covers do not prevent the injurious eifects of the warping of the wooden handle or stock. The object of our invention is to obviate this defect in ordinary squares, which invention we will now proceed to describe.

In the drawing, A represents the blade of a square, and consists, as usual, of a thin strip of steel. Instead of securing this blade directly to a wooden handle or stock in the usual manner we attach it to a metal stock, to which a block, B, of wood is adapted. The metal stock consists of a casting of brass or other metal, in the upper portion a of which a slot is cut for receiving the end of the blade A, which is permanently secured to stock by rivets b I). From the upper portion a the stock is extended downward so as to form the leg d, which is properly faced so as to be at right angles to the blade.

\Ve are aware that it has been a common practice to make squares with metal stocks or handles, so as to avoid the defects of ordinary wooden handles; but with a view of making them light it became necessary to have these handles of a shape so inconvenient as to be objectionable to those who had to handle the instruments; hence ordinary squares with metal handles have been for the most part discarded as unhandy and unpopular tools. In order to obviate this defect we adapt to the metal stock above described a wooden block, B, which, when fitted to its place, forms, with the said metal stock, a handle of the same form and dimensions as those of an ordinary square. It will be seen, therefore, that while our improved square possesses all the advantages of a square with a metal stock as regards the permanent truth of the tool, it has all the advantages of an ordinary square with a wooden stock as regards convenience in manipulating. Inclined ribs 0 on the stock form a dovetail, best observed on reference to Fig. 2, a corresponding dovetailed groove being formed in the wooden block for receiving the dovetailed ribs, so that the block may be moved upward, as shown in Fig. 3, until it incloses the whole of the stock, excepting the front of the leg at and the upper and rear edges of the portion a of the stock. In addition to the dovetail, the stock may be secured by a small pin or rivet. When the wooden block is thus fitted to its place the improved square will have the appearance, shape and dimensions of an ordinary square, the handle or stock, however, being somewhat heavier than that of a common square in which the blade is secured directly to the wooden stock.

Claim.

names to this specification in the presence of two subscribing witnesses.

HENRY DISSTON. JOAB MORSS.

\Vitnosses:

A. H. SHOEMAKER, SAMUEL DISSTON.

US126527A Improvement in try-squares Expired - Lifetime US126527A (en)

Publications (1)

Publication Number Publication Date
US126527A true US126527A (en) 1872-05-07

Family

ID=2195952

Family Applications (1)

Application Number Title Priority Date Filing Date
US126527A Expired - Lifetime US126527A (en) Improvement in try-squares

Country Status (1)

Country Link
US (1) US126527A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518768A (en) * 1966-12-06 1970-07-07 Quenot & Cie Sarl Trysquares
US4910876A (en) * 1989-09-07 1990-03-27 Channell John F Level attachment
US20060053164A1 (en) * 2004-09-03 2006-03-09 Teracruz, Inc. Application-layer monitoring of communication between one or more database clients and one or more database servers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518768A (en) * 1966-12-06 1970-07-07 Quenot & Cie Sarl Trysquares
US4910876A (en) * 1989-09-07 1990-03-27 Channell John F Level attachment
US20060053164A1 (en) * 2004-09-03 2006-03-09 Teracruz, Inc. Application-layer monitoring of communication between one or more database clients and one or more database servers

Similar Documents

Publication Publication Date Title
US605577A (en) Inson
US2576869A (en) Combination hand ax and saw
US263104A (en) edwaed a
US124108A (en) Improvement in rigging-screws
US790973A (en) Attachment for hatchets.
US1524392A (en) Carpenter's bevel
US1080365A (en) Saw.
US1494576A (en) Saw
US2805696A (en) Attachment for planer for boats
US513138A (en) Charles g
US1153910A (en) Rotary cutter-head.
US997243A (en) Carpenter's saw-vise.
US1825859A (en) Plane
US2734535A (en) neubauer
US107398A (en) mooney
US1708131A (en) Circular saw and tooth construction
US433078A (en) Cutting-tool and handle
US1994023A (en) Bevel square
US2472570A (en) Work-supporting adjustable mandrel for band saws
US131195A (en) Improvement in clamps
US1330213A (en) Ax
US1705994A (en) Cutter head
US862809A (en) Tool-holder.
US300178A (en) Carpenter s work-bench
US3319527A (en) Vertical tail stock support