US2352007A

US2352007A - Welder's hood

Info

Publication number: US2352007A
Application number: US461397A
Authority: US
Inventors: Roy M Rickert
Original assignee: Individual
Current assignee: Individual
Priority date: 1942-10-09
Filing date: 1942-10-09
Publication date: 1944-06-20
Anticipated expiration: 1961-06-20

Description

. June 4- r R. M. RICKERT I 5 WELDERS noon Fil ed Oct. 9, 1942 2 Sheets-Sheet 1 H I i I J 3 INVENTOR.

.EOYM. .E/C/(EE? I 26 ATTORNEY.

June R. M. RICKERT' 2, 52,007

WELDER s HOOD Filed oc t. 9, 1942 2 Sheets-Sh'eet 2 INVENTOR. .190) M. Baa-:27;

ATTORNEY.

Patented June 20, 1944 FF' E WFLDERS noon Roy M. Rickert, Oakland, Calif. Application October 9,1942, Serial No. 461,397 1 Claim. '('o1. 2 -'s This invention relates to welders hoods. I It is the principal object of my present inven-- tion to provide an improved hood" for welders in which the window closure over'the sight open-' ing therein may be moved from position by the welder hands. e

In practicing my invention I provide a welders hood formed with a sight opening inline with the wearers eyes. At the exterior of this opening is awindow closure hinged'to the hood so that it maybe moved between opened and closed positions. Interiorly of the hood is positioned an operating member engaging the lower jaw of the wearer, so that the latter may operate. the member by movement of the lower jaw. A. connecting mechanism connects the operating member with the closure in such a manner that successive operations of the operating member alternately positions the closure in opened and closed positions.

One form which the inventiOn may assume is exemplified in the following description, and illustrated by way of example in the accompanying drawings:

Fig. 1 is a front elevation of a welders hood embodying the preferred form of my invention.

Fig. 2 is a rear elevation thereof.

Fig. 3 is a central vertical section through the hood taken on line 33 of Fig. 1.

Fig. 4 is a fragmentary plan section through the hood taken on line 4+4 of Fig. 2.

Figs. 5 and 6 are fragmentary views in side elevation showing the operating mechanism of the closure.

Fig. 7 is a fragmentary view in perspective showing certain details of construction.

Referring more particularly to the accompanying drawings, I indicates a welders hood which may be of any conventional design. This hood is provided with a sight opening or window II fitting which is a closure member I2. The closure member I2 is positioned exteriorly of the opening II and overlies it'in a position abutting the window frame I4 about the perimeter of sight opening II. The closure member I2 is hinged to the frame I4 along its upper edge on a horizontal axis sothat the closure I2 may swing between opened and closed positions as illustrated in Figs. and 6.

At one end of the closure I2 and at one side of the hood III, the former is fitted with a fixed yoke I5 extending co-axially of the pivot or hinge axis of the closure I2. The ends I6 and. I! of the yoke closedto opened withoutthe use of his lation of the bar tances from the pivot axis of the closure I2 as shown in Figs. 5, 6, and '7.

Projecting through the yoke l5 isthe cam end I8 of a vertically reciprocal member I9 which. is slightly flexible ina plane transversely'of the yoke or radially with respect to the pivot axis of the, closure. The cam It has inclined cam, surfaces 23 and El which converge as illustrated. The sides of the cam I8 project beyond the sides of the member -I9 and'form'

lateral shoulders

22 and 23 the undersides of which'alternately engage the yoke ends I6 and I! as will be'described.

The vertically reciprocable member I9' is guided for vertical reciprocation in guide 24 and in a slot 25 formed in the side of the hood Ill. The lower end of the member I9 projects through this slot into the hood and is pivotally connected at its lower extremity therein to one end of an oscillatory operating bar 26. This bar 26 is hinged at its opposite end to the hood ID as at 21 so that the bar may oscillate in the plane of movement in the member IQ. Obviously oscil- 26 will be translated into reciprocation of the member I9. 7

The operating bar 26 has a chin socket 28 to engage the point of the lower jaw of the wearer I of the hood. By movement of the-jaw, the

I5 are disposed equal radial diswearer may oscillate the bar and reciprocate the member I9. A spring 29 yieldingly maintains the member I9 in its uppermost position. 7

A spring 39 is connected to the hood I0 and to one end of the yoke I5 and is so disposed with" relation to the center of the yoke I5 as to exert its tension in a manner to yieldingly maintain the latter in either of two positions. That is, in the positions where the closure I2 is in opened position and in closed position.

In operation of the device assuming that the closure I2 is in closed position as illustrated in Fig. 5, and the wearer desires to open it, the wearer moves his lower jaw downwardly depressing the operating bar 26 which pulls down the member I9. As it travels downwardly the lateral shoulder 22 on the cam I8 engages the end I 5 of the yoke I5 and swings the latter about its pivot pointmoviug the closure I2 to opened position as illustrated in Fig. 6. During this movement the shoulder 23 clears the end I! of the yoke I5 so that no engagement therebetween results.

When the wearer raises his jaw, the spring 29 elevates the bar 26 and tion it for a subsequent operation. A stop memher 3: (Fig. 3) limits the upward movement of the member I9 to p0si-' the member [9 and the bar 26. The cam faces 20 and 2| and the flexibility of the member I9 in the plane of the cam l8 enables the cam I8 to pass back upwardly through the yoke [5. Obviously from Fig. 6, when the cam l8 moves upwardly and its inclined surface 2| engages the end of the yoke, the cam face 2| will cause the member l9 to flex and thus enable the cam l8 to pass through the yoke. On alternate operations of the member IS, the cam face 2!! similarly cooperates with the opposite end of the yoke. The parts upon opening the window will be in the position shown in Fig. 6 so that upon the next downward movement of the member IS, the shoulder 23 will engage the yoke end l1 the closure I! in closed position.

15 and swing the yoke I5 in the direction placing It is obvious that the moment that the yoke 1 moves sufiiciently so that the spring 30 is over center, a snap opening or closing of the closure ;I2 will result. Thus successiveoperations of the operating bar 26 and the reciprocable member 19 will alternately result in opening and closing of the closure l2.

It is obvious that the wearer need not use his hands at all in the operation, which isquite important in that it enables him to maintain both hands on the work or instruments with which ,he is engaged.

While I have shown the preferred form of my invention, it is to be understood that Various changes may be made therein by those skilled in the art without departing from the spirit of the invention as defined in the appended claim.

Having thus described my invention, what I claim and desire to secure by Letters Patent is: A welders hood having a sight opening in the front wall thereof, a transparent closure for said opening, a hinge connection between the upper horizontal edge of said closure and the upper horizontal boundary of said opening whereby the: closure will swing about a horizontal axis, a yoke rigidly fixed to one side of said closure and projecting laterally therefrom, said yoke having an elongated slot therein arranged transversely of the pivotal axis of the closure and extending equal distances on opposite sides of said axis, a vertically reciprocable member at the exterior side of the yoke,-a cam end at the upper end of said member projecting through the slot in said yoke and operative on successive downward strokes of said member to alternately engage opposite ends of the yoke and swing the closure in opposite directions between closed and opened positions, a member positioned interiorly of the hood and hinged at one end to the side thereof opposite said vertically reciprocable member and connected at its opposite end. through the hood to the lower end of said vertically reciprocable member, the intermediate portion of said interiorly positioned member being engageable by the chin of the wearerof the hood whereby it may be depressed to move said verticallyv reciprocable member downwardly, and spring means constantly tending to move said vertically reciprocable member to its uppermost position.

ROY M. RICKERT.