US833528A

US833528A - Saw-blade.

Info

Publication number: US833528A
Application number: US26996605A
Authority: US
Inventors: Albert F Jones
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-07-17
Filing date: 1905-07-17
Publication date: 1906-10-16
Anticipated expiration: 1923-10-16

Description

No. 833,528. PATEN-TED 0cT.16,1906.' A. F. JONES.

SAW BLADE. APPLICATION FILED JULY 17. 1905.

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consists of a thinflat p UNITED STATES PATENT OFFICE.

Specification of llfietters Patent.

Patented 0a; 16, 1906.

application 5186 m 17, 1905'. Serial No. 269,966.

T0 all whom. it 'may'concern:

setts, have invented an Improvement in Saw- Blades, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention .relates to saw-blades for sawing'stone, andhas for its object to pro-' videja blade which may be made of soft metaL'and consequently flexible, with teeth minate flush withthe ends of the teeth, the employment of said wearing ortions result- 7 ing in reducingthe wear on t e teethfto the minimum and enabling the production of a flexible blade with very durable teeth.

Figure 1 shows in side elevation a portion of a saw-blade embodying this invention. Fig. 2 is a vertical section of the same,taken on the dotted line 2 2. Fig. 3 is a vertical section of the same, taken on the dotted line 3 3. Fig. 4 is an edge view of-one of the hard metal plates to be referred'to.

0 represents the'bodp ofthe blade, which ate orbar'of soft iron or equivalent material of an suitable dimensions and having a straight ower; edge. The lower edge of the bar a is cut transversely at re ular intervals to form semicircular or other shaped recesses a, and thereby provide the bar with a row of projecting te'ethfthe ends of which are strai ht and serve as stoneengaging' faces. The ar thus made'of soft iron or equivalent material for flexibilitv will wearaway rapidly, and to'obviate this hardmetal plates 6 are secured to the bar at'the' recessed portions thereof, which are constructed and arranged, as will be described, to provide wearing portions at both endsof the stone-engaging faces of the teeth. The

plates b are made rectangular in shape and considerably thicker than the bar, and the edges of the plates, at the to s and both ends, are grooved, as at b. T e width of the marginal grooves b in the plates corresponds to the thickness of the bar a, so as to receive said bar, and the bottoms of said grooves correspond to the shape of the recesses in the bar, so that the plates may be placed upon or' slid onto the bar at the recessed portions thereof and abutted firml Be it known that I, ALBER r JONES, of Salem county of Essex,State of Massa'chw spaces between the teeth on the bar.

against its lower of the teeth. The lower. edges of the plates 1) arev cut transversely to provide semicircular or,' other shaped recesses 72*, which form The plates are secured tothe bar by rivets c or other suitable fastenings. The hard-metal plates 12 thus inclose or cover the edges of the teeth on the bar, and as the lower ends of said plates terminate flush with the ends of the teeth hard wearing portions are provided at both ends of the stone-engaging faces of the teeth, which will be continued as the. teeth thus protected slowly wear awa The i wear on the teeth is thus reduced to t e minimum.

In practice the water and sand used in =sawing stone pass freely along the sides of the bar a, and as the bar is moved to and fro the same will repeatedly-accumulate in and be.

reinove'd from the interdental spaces 6 Having thus described my invention, what I claim as new, anddesire' to secure by Let-.

ters Patent, isv 1. A saw-blade for sawing stone consistin ofa-bar' recessed along its lower edge to provide teeth, plates secured to said bar, at-the recessed portions thereof, the lower edges of which are terminated flush with the ends of the teeth on the bar to provide wearing portions at both ends of the stone-engaging faces ofthe teeth, and are formed with transverse recesses at points intermediate their length to provide interdental spaces, substantially as. cscribed. 2. A saw-blade for sawing stone consisting -of.a barrecessed along its lower edge to form teeth, plates secured to said bar, at the recessed portions thereof, which are made" thicker than the bar, and have their lower edges terminated flush with the ends of the teeth'on' the bar, to provide wearing -portions at both-ends of the stone-engaging faces of the teeth, formed with transverse recesses'at points intermediate their length to provide interdental spaces, and have their tops and both ends grooved to receive the bar, substantially as described. i

3. A saw-blade for sawin stone, consisting'of asoft-meta'l bar rovi ed alon its edge with projecting'teeth avingstraig t stone- 5 5 edge, and when thus place in position on the engaging 'faces or ends, and hard-metal plates inclosing the edges of said teeth, at both ends of their stone-engaging faces, which terminate flush with said stone-en aging faces, and serve as wearing portions or the teeth, said plates having interdental recesses, substantially as described.-

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CYNTHIA DOYLE.