US1720535A

US1720535A - Automatic guard for saws

Info

Publication number: US1720535A
Application number: US240869A
Authority: US
Inventors: Calmer G Wold
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-12-17
Filing date: 1927-12-17
Publication date: 1929-07-09
Anticipated expiration: 1946-07-09

Description

1 July I c. G. WOLD 1.720.535

- AUTOMATIC GUARD FOR SAWS Filed Dec. 17, 1927 2 Sheets-Sheet 1 x u w]. I 6

July 9, 1929. c. G. WOLD 1.720.535

AUTOMATIC GUARD FOR SAWS I Filed Dad. 17, 1927 2 Sheets-Sheet 2 14 /3 /4 2 vli f. \\\T\\ fl 2 [H H Ar 3 U /8 /6 9 /7 y 17 J 1.9 a D I a G 770% i v 26 3mm 7/ $3, I i I I Gam a Patented July 9, 1929.

UNITED STATES CALMER G. WOLD, OF EAU CLAIRE, WISCONSIN.

AUTOMATIC GUARD FOR SAWS.

Application filed December 17, 1927.

This invention relates to wood sawing machines and aims to provide an automatic guard for guarding the usual disk saw to insure against injury to the operator.

The primary object of theinventilon is to provide a guard oi? this character which will normally house the upper portion of the saw, and one which will automatically move from guarding position when a length of wood moved into contact with the saw.

A further object of the invention is to provide a guard of this character which will automatically move to its guarding position after the wood has been sawed or passed by the saw.

With the foregoing and other objects in view which will appear as the description proceeds, the invent-ion resides in the combination and arrangement of parts and in the details oi construction hereinafter described and claimed, it being understood that changes .in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit oi? the invention.

Referring to the drawings:

Figure 1 is a side elevational view of a saw and a guard, the guard being in its active or guarding position.

Figure 2 is an elevational view illustrating the guard as moved to its inactive position, while a length of wood being sawed.

Figure 3 is an clevational view taken from the opposite side of the saw guard and illustrating one or the sections of the saw guard as returned to its guarding position.

Figure 4t is a plan view of the guard.

Figure 5 is a sectional view taken on line 55 of Figure 1.

Figure 6 is a sectional view taken on line (56 of Figure 1.

Referring to the drawings in detail, the reference character 5 designates the saw table which includes the carriage 6 on which the wood being sawed is positioned and hold while it is being moved towards the saw.

On the carriage G is a block 7 against which the length oi wood which in the present showing is indicated. by the numeral 65, is positioned to hold the wood in its proper position while it is being sawed. The guard which embodies a pair of movable sections includes a main supporting section 9 which is secured to the saw table, the inner surface thereof being slightly curved as at 10 conforming to the curvature of the saw.

Serial No. 240,869.

The main supporting section has a rearwardly extended portion 11 formed with an elongated opening 12, within which the rollers 13 operate, the rollers being secured between the

plates

14 and 15, the latter plate being a part of the guard section 16, as clearly shown by Figure 1. Cooperating with. the guard section 16 is a guard sect-ion 17, which movable with respect to the guard section 16, the same being connected to the guard section 16 by means of the bolts 18 that eX- tend laterally from. the guard 16.

These bolts 18 operate in the elongated openings 19 which are disposed vertically with respect to the guard section 17, the connection between. the bolts and section 17 being such as to permit of tree vertical movement of the section 17.

The guarding section. 16 has a laterally disposed liango 20 against which. the n'iovable section 17 engages, to the end that the

sections

16 and 17, when .in their active or guarding positions, define a housing for the disk saw, which is indicated by the numeral 21., and which is shown as operating within the guard.

Supported by the plates 1.4- and 15 is a shaft 22 on which the roller 23 is mounted, the roller 23 being disposed laterally of the plate 15 so that it will lie in the path of travel of the pivoted arm 24.

As shown, the arm 24 is mounted on, an arm 25 and is pivotally supported at- 26 so that it will swing freely in one direction, but will be restricted against swinging in the opposite direction by its contact with the pin 27 secured at the base oil the arm 2:".

Arranged on the carriage l is a track 2% on which the base 29 that supports the arm 25 is adjustably mounted, there being provided a securing member in the form of a screw 30 operated by the member 31 for securing the base 29 in its positions of adjustment, throughout the length of the track 28. Thus itwill be seen that by moving the base 29, the location of the arm 24- may be changed. with respect to the roller 23 to cause the guard to be operated at various intervals.

The operation of the device is as follows:

A length of wood is positioned. on the carriage and is moved against the block 7, whereupon the operator moves the length of wood to be cut forwardly, moving the carria 'e at the same time. As the carriage moves forwardly, the arm 24 engages roller 23 moving the guard vertically or to a position as shown by Figure 2 allowing the length of wood to pass under the guard and be cut by the saw 21.

As the length of Wood is cut, the operator of course moves that portion of the length of Wood held in his hand, away from the saw. It follows that the section 17 of the guard will now drop downwardly guarding the saw until the carriage is returned and the length of wood sawed has been removed.

When the wood has been removed from the guard it is obvious that the guard will gravitate to its guarding position or position as shown by Figure 1.

I claim 1. A guard for rotary saws including a pair of vertically slidable sections, a carriage for delivering material to the saw, a pivoted finger on the carriage a roller carried by one of the guard sections, said linger adapted to engage the roller to move the guard sections vertically, and said guard sections adapted to gravitate to their normal positions.

2. A guard for rotary saws including a pair of vertically slidable guarding sections, a carriage for delivering material to the saw, a finger mounted on the carriage and pivotally supported for swinging movement in one direction, means carried by one of the guard sections to be engaged by the finger to elevate the guard section, and said guard section adapted to gravitate to its normal position.

In testimony that I claim the foregoing as my own, I have hereto aflixcd mv signature.

CALMER G. worn.