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Патент USA US3067436

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Dec. 1l, 1962
A. c. ToMPKlNs
Filed May 2, 1961
»fr/¿ur C 7Z/77pK//2J
United States Patent Oi ice
Arthur C. Tompkins, 11802 E. 59th St.,
Kansas City 38, Mo.
Filed May 2, 1961, Ser. No. 107,118
1 Claim. (Cl. 2_8)
Patented Dec. 11, 1962
said side panels is pivotally connected to said helmet
by means including a pÍvot shaft 14, the shafts at the
opposite sides of the helmet being coaxially disposed on
a horizontal axis transverse to said helmet.
Each of
said shafts extends rotatably through the associated side
panel 10 of the shield. Exteriorly of said side panel, said
shaft extends through a countersunk washer 16 and a
This invention relates to new and useful improvements
helical compression spring 1S, and has a nut 20 threaded
in a welder’s combination helmet and shield, and relates
on its outer end. Spring 18 is compressed between said
particularly to a combination device of the character de
scribed comprising a helmet or other head engaging de 10 washer and s-aid nut. Interiorly of side panel 2, shaft 14
passes successively through a circular clutch plate 22
vice wlth a face and eye shield attached adjustably there
to for movement selectively to operative and inoperative
positions, and intermediate positions.
which rests against the inner surface of side panel 10, and
a second circular clutch plate 24 which overlies the
inner surface of plate 22 and is coextensive therewith.
provision of a device of the character described having 15 Shaft 14 is freely rotatable in and longitudinally movable
with respect to plate 22, but is welded or otherwise rigid
means whereby the shield is positioned fìrm‘y and ac
ly añixed to plate 24. Clutch plate 22 is provided with
curately in any one of a plurality of predetermined posi
an integral, radially extending arm 26 lying against the
tions required in normal usage, but which is neverthe
An important object of the present invention is the
less releaseable for movement from one position to an
inner surface of side panel 10, said arm having a cross
use or not.
rounded cross-sectional contour, as best shown in FIG.
5, in order that the two clutch plates may be rotated
20 bar 28 at its outer end in which is formed an arcuate
other by manual pressure exerted thereon.
slot 30 concentric with the axis of clutch plate 22. A
Another object is the provision of a device of the
bolt 32 extends through side panel 10 and slot 30, and
character described wherein the pre-determined positions
has a nut 34 threaded on the innner end thereof, so that
of the shield may be adjusted to the preference of the
when said bolt is tightened to clamp cross bar 28 against
individual user.
. Still another object is the provision of a device of 25 side panel 10, clutch plate 22 is secured against rota
tion relative to the shield. Clutch plate 22 has a plurality
the character described having novel latch means whereby
of radial ribs or offsets 36 formed thereon, said ribs being
the shield may be quickly and easily detached from and
regularly spaced angufarly of the plate, and clutch plate
connected to the head-engaging portion. This provision
24 has a matching set of grooves 38 formed therein and
is particularly useful when the head-engaging portion is
ribs 36, being held yieldably in engagement
a safety helmet or “hard hat,” and safety regulations re 30
therewith by spring 18. Said ribs and grooves are of
quire said helmet to be Worn whether the shield is in
Other objects are simplicity and economy of construc
tion, efficiency and dependability of operation, and
adaptability for use «with face-protecting safety devices
other than welder’s helmets.
With these objects in view, as well as other objects
which will appear in the course of the specification, ref
erence will be had to the drawing, wherein:
FIG. 1 is a side elevational View of a welder’s helmet 40
and face shield embodying the present invention, show
ing the shield in its primary operative position in solid
lines, and in other positions in dotted lines,
relative to each other by applying sufñcient rotational
torque thereto to cause said ribs and grooves to cam
said clutch plates relatively apart against the pressure
of spring 18.
Añixed to each of shafts 14 in inwardly spaced` rela
tion from the associated clutch plate 24 is a short, rod
like stud 40. Said studs are disposed at right angles
to shafts 14 and parallel to each other, extending gen
erally horizontally and rearward'y with respect to helmet
2. Each stud is inserted rearwardly and slidably through
the tubular barrel portion 42 of a latch body member
FIG. 2 is an enlarged, fragmentary sectional view taken
on line II--II of FIG. 1, with parts left in elevation, 45 44 whiïh is in turn affixed to the adjacent side of helmet
2 as by rivets 46. Said stud extends outwardly from the
FIGS. 3 and 4 are enlarged, fragmentary sectional
rearward end of barrel 42, and has a notch 48 formed
views taken respectively on lines III-III and IV--IV
in the upper side of the extended portion thereof. Said
of FIG. 2, and
notch is engaged by a pawl 50 pivoted in latch body 44
FIGS. 5 and 6 are fragmentary sectional views taken
50 at 52, whereby to lock stud 40 against withdrawal from
respectively on lines V-V and VI--VI of FIG. 4.
bar‘el 42. The pawl is provided with an operating lever
Like reference numerals apply to similar parts through
54 whereby said pawl may be manually disengaged from
out the several views, and the numeral 2 applies gen
notch 48, and with a spring 56 whereby it is resiliently
erally to the helmet or head engaging portion of the
biased toward its engaging position.
device, while the numeral 4 applies generally to the face
In use, the user may detach the mask or shield from
mask or shield. The helmet may be formed of steel 55
the helmet by pressing the two operating levers 54 for
or other rigid material to constitute the usual safety
“hard hat.” It customarily has disposed therein adjust
able head bands for comfort and to adjust to the head
size of the wearer, but these form no part of the present
wardly to release pawls 50 from stud notches 48, where
upon the shield may be moved yforwardly to withdraw
studs 40 from latch barrels 42. The mask may be re
invention and are not here shown. If the mask is to be 60 attached simply by inserting studs 40 in barrels 42, and
pressing them rearwardly until they are engaged by pawls
usedy in areas not requiring the use of a safety helmet,
the head-engaging portion may comprise simply a head
band device to serve as a mounting for the mask or shield.
The shield would ordinarily be removed in this
manner only when the user plans to work for a consider
able period of time without the mask, but where good
The mask or shield 4 is usually formed of fiber, plastic,
sheet metal or other lightweight material, and comprises 65 safety practice requires the continued use of the safety
helmet 2. In common usage, a Welder merely grasps
a cylindrically curved front portion 6 in which is mounted
the shield and pushes it up or down to the desired posi
a window frame 8 usually containing darkly tinted safety
tion, torque on the mask causing ribs 36 of clutch plates
glass, generally planar and parallel vertical side panels
22 to act as cams forcing clutch plates 24 inwardly against
10, and a generally spherically curved top panel 12
pressure of springs 1S until the grooves of plates
joining the upper edges of said front and side panels.
24 are freed from the ribs of plates 22 to allow the shield
Side panels 10 of the shield extend rearwardly adjacent
to pivot. Side panels 10 of the shield are sufficiently
the respectively opposite sides of helmet 2, and each of
yieldable to spread. to the degree required for this' move
ment,` The shield will be secured releaseably in the next
position when the ribs of plates 22 are brought into
registry with and are engaged by the next set of grooves
of plates 24. Thus while the shield may be moved freely
from one position to another as desired, it is neverthe
be made without departing from the spirit of the inven
tion as defined by the scope of the appended claim.
What I claim asv new and desire to protect by Letters
Patent is:
In combination, a head-engaging member adapted to
be worn in the manner of a hat, a face shield adapted
less indexed accurately in any ofarseries ofy predetermined
to be positioned forwardly of the face of the wearer when
positions', and restrained against accidental movement.'
said head-engaging member is so worn, and including a
This is a distinct advantage' over' previous structures
pair of side panels extending rearwardly adjacent respec
within my knowledge wherein the shield is held in any 10 tively opposite sides of said head-engaging member, and
position simply by frictionally loaded pivots. In such
connecting means joining each of said side panelsto said
structures, the pivots'repeatedly work loose so as to allow
headengaging member whereby said shield may be piv-`
uncontrolled movement of the shield, and there' is nothing
oted relative to said head-engagingY member on a hori
to providethat the shield will be indexed accurately in
z’ontal transverse axis, said connecting means' including
predetermined positions.
a' shaft extending lthrough a' side panel of said shield for
In general practice, Welders desire these alternative
rotation and longitudinal movement, resilient means urg
positions of the shield 4, first the normal position of
ing said shaft outwardly'with respect to said side'panel,`_
use shown in solid lines `in FIG. 1, second a completely
a first clutch plate disposed against the inner face ofy
inoperative position allowing unrestricted vision as shown
said side paneland having a series of'regularly spaced
in'do'tted lines at 4f in FIG'` 1, and'third an intermediate
radial ribsl on the inner face thereof, said shaft'extending'
position as-shown in dotte-d lines at 4” in FIG. 1, in
which the wearer is permitted free vision of his owny
normal field‘iof work, but in which his‘eyes are pro-k
tected fro‘mthe rays"~of-the welding flame or arc of other
Welders who may be working nearby; The'present struc
ture provi'des':.these three positions. However, it will be'
readily 'apparent that a’ greater or smaller number of posi-"
tions cculdïb‘e provided, as desired, simply by changingv
the-angular spacingvbetween theribs and grooves 'of clutch
plates 22 and 24'.
' It'f is'- also desirable that the various>> positions ofr the
shield, particularly the so-lidline position shown in FIG.~
l', be adjustable to suit the individualrequirements andv
centrally through said clutch plate' and being rotatablev
and longitudinally' movable therein, means` fixing-said1l
first clutch plate to' said side panel, a'sec‘ond clutch plate~
affixed on ‘said vshaft inwardly'from said ñrst clutch' plate`
and having a _series of grooves formed in' the outer face
thereof matching withpthe ribs of said first` clutch plate,
and being urged'` against s'aid first clutch plate by said-f
resilient means whereby said ‘grooves engagesaid -ribs, said"
ribs and grooves being of rounded cross-sectional counter
30 whereby said clutch plates> may be rotated relatively
by the app‘icationof considerable torque to one> of -said'É
clutch plates, amd-like stud añîxed to' the' inner end"
of said :haft and extend-ingrat right'anglesl thereto, alatchî
preferencesof‘each individual user. Factors influencing
b'ody affixed- to s'aid head-engaging member and having
thel proper positioning of the shield are the habitualv 35 a~ tubular barrel receiving said stud slidably therein',l andE
working position of the user, whether he must wear spec
al‘s'pring'lo'aded pawll carried movably by said latch" body'
ta'cles or not, whether the> particular welding job-is dis
posed' high or low with respect to the operator’sr posi
tion, and others.' In the present structure this adjustment '
mayfbe accomplished by loosening bolts 32, moving thev
shield to the precise- position desired without disengaging
the clutch plates, and then tightening said bolts.
' -While Iï have shown and described a specific embodi
ment ofï my` invention, it willbe readily apparent that'
many min‘orî changes of structure and operation could4
and engaging a notch formed therefor in said stud to‘
prevent withdrawal'o'f said stud from said barrel.
References Cited in the file of this patent
Edwards et al.- ________ __ Mar.' 1', 1960
Edwards et al. _______ __ Mar. 7, 19'61
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