US1589465A

US1589465A - Cloth-cutting machine

Info

Publication number: US1589465A
Application number: US704566A
Authority: US
Inventors: John B Gury
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-04-07
Filing date: 1924-04-07
Publication date: 1926-06-22
Anticipated expiration: 1943-06-22

Description

June 22 1926. i 1,589,465

J. B. GURY CLOTH CUTTING MACHINE Filed April v, 1924 Invenor: L 4 en. Gwr'y,

./ .By @D dA @w Llli Patented June 22, 1926.

JOHN B. GURS?, 0F ST. LOUIS, MISSOURI.

CLOTHnCUTTING MACHINE.

Application filed April 7,

This invention relates to cloth cutting machines and the like, and has for its objects to provide a simple. and elicient safety device or guard for the cutting blade of such machines, which will not interfere with the regular function and operation of the cuttii g' blade, yet will prevent serious accidental injury to the operator in handling and manipulating the machine. Y

in machines of this character, there is usuallf provided either a rotating circular blade or a reciprocating blade for cutting the cloth or material as the machine is moved by the operator against the latter on a work-table. Obviously, the cutting portion of the blade is necessarily exposed considerably, and the blade operating at a relatively liigli speed sometimes seriously cutsl the operators hands and is liable to completely sever a finger when brought into contact therewith.

{iluards of various kinds have been provided on machines which protect only as to a portion of the cutting blade,while others are made adjustable so as to take care of piles of cloth or material of different thioknesses. The latter type of guard is usually more or less intricate in construction and in many cases only serves toA guard that portion of the cutting blade above the pile of. cloth or material.

r1She present invention, therefore, aims to provide a guard throughout the entire eX- posed portion of the cutting blade, and it consists essentially in the provision of a stationary, relatively thin member or plate approximating the thickness of the cutting blade and placed alongside of the latter, the edge portion of said guard member or plate being blunt and set back a short distance from the exposed cutting edge of the blade. r)The invention furtherconsists in providing for the adjustment of the guard to compensate for the reduction in diameter or width of the cutting blade due to wearing away thereof in the course of resliarpening it from time to time. The invention still further consists in the parts and in the combination and arrangements of parts hereinafter described and set forth in the appended claims. f

ln the accompanying drawings illustrating a` practical embodiment of the invention,-

Figure 1 is a side elevation of an ordinary cloth cutting machine having' a rotary cut- 1924. Serial No. 704,566.

'ting blade, and showingthe relation of thel safety guard therewith;

Figure 2 is a view of the guard member detached Figure 3 enlarged scale` looking at the opposite-.side of the machine from thatshown in Figure l, parts being broken away or removed; and

Figure l. is a fragmentary section, taken substantially on the line 4i-4 of- Figure l, to illustrate the correlation of the guard member tothe forward `working edge of the cutting blade and supporting standard of the machine. I

Referring vnow to the drawings, the nu-v meral ljdesignates the base-plate of the machine, having the usual .tapered edge por-v tions so as to ride under the cloth or ma-r terial on the work-table. ExtendingY upward from the base-plate is the standard 2, at the top of which is an electric motor 3, and atthe rear of which is the manipulating handle 4.

On the shaft of the motor 3 is awormscrew 5 which engages and drives a gear 6, which latter in turn engages and drives a second gear 7, the standard 2 being internally recessed to accommodate said gears and the circular cutting blade 8, which latter is fixed axiallvto the gear 7 so as to rotate therewith. The blade 8 projects through 1a slot in the forward portionof the standard, and they standard is obviously tapered AonY each side in the region of the exposed vportion of the blade so as to be wedge-like in order to minimize resistance to the cloth or material. and not interfere with the cutting operation.

The guard member, comprising the plate 9, is placed alongside of the cutting blade 8, its exposed edge portion 10 being shaped to conform substantially to the curvature of the periphery of the blade, and its edge, which is relatively blunt as compared with sharpened edge of the blade, being set normally rearward of the latter. The outer corner of the guard is preferably rounded off a bit, as at 11 (see Figure 4) so as take away the sharpness of the edge and yet leave it sufficiently blunt for the purposes intended.

The guard plate 9, for the purpose of clearing the gear 7 and hub portion of the cutting blade'S, has a central opening 12 which is somewhat elongated or elliptical is a fragmentary view, on an.

through a slot 17 therein. ln this. way the.

forward edge of the guard member may be readily adjusted'with respect to the-cuttingV edge of the cutting blade so as to take.A care of=`aiiy reduction in` the diameter oi the blade due to the grinding away thereof in "fr the course-ot resharpening.

By the provision of a guard ot this char'- acterland: the same being' stationary while the cutter is'v rotating, it. Oilers considerable resistance to solid flesh or bone so as to prevent the cutting` blade from going deeper thanl the extent of' its slight projection from the edge ofthe guard, thereby enablingtheoperator to. get his. hand or.V

finger away from the cutting blade before v af relati'velydeep incision is madev and at least Vavoid complete severance-.of bone oi thehand or finger. Att the same time, the

guard will: nots-interfere with the cuttingpoi" cloth or,` material of a pliable4 character through which. the ordinaryv cutting blade will: make itsV way in the-.customary manner.

rEhe invention admits. ofl considerable modification within the spirit thereoin as delined by the appendedi claims. Therefore,

iti. is.; not limited to the specific constructionY and; arrangement shown in `the, accompanyingr drawings.

lVhat: is claimed. is:

l'. Inamachine for cutting cloth and the like, a composite cuttingA element comprisingL a `travellingcutting blaoeproper and a correlated stationary blade-like rmember* in juxtapositionto said-V travelling blade, said aA relatively blunt edge terminating inward troni the-cutting edge of said blade a relatively shortdistance and extending substantially parallel with and throughout the eX- posed. extent ot said cutting edge.

3. Ina, machine for cutting cloth and the like, in combination with a travelling cutting blade, of a guard member having a portion approniniatingY the saine thickness of the bladeV and located in juxtaposition to the exposed' Vworking portion of the latter, said guard member having a relatively blunt edge extending substantially parallel. with and throughout the exposed cutting. edgeof' said blade, and' means for ell'ectingadjustiiient oi said guard member relative to they cutting.v edge of said blade andv or holding said guard member noi'- inal'ly'stationary in its adjusted position.V

fi; in a machine for cutting cloth and the like, comprising a base-plate, a standard on saidy base-plate, a rotating, circular cutting blade on said standard, guard member on said standard in juxaposition to saidcutting blade, said guard member having a relatively blunt, arcuate edge portion terminating inward from the cutting edge of said blade and extending substantially parallel' with and' throughout theexposedextent ofY said cuttingedge.

' J. B. GURY.

and a stationary