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Патент USA US2085461

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June 29, 1937.
.1. s. CHAFEE
1 2,085,461
COMBINATION RULE AND SLIDABLE HEAD
Filed June 11, 1935’
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2,085,461?
Patented June 29, 1937
UNITED STATES
PATENT
OFFICE *
2,085,461
COMBINATION RULE AND SLIDABLE HEAD
‘John S. Chafee, Providence, R. I., assignor to
Brown & Sharpe Manufacturing Company, a
corporation of Rhode Island
~Application June 11, 1935, Serial No. 25,996
12 ' Claims.
This‘invention relates to a rule with a head
member movable therealong for testing or laying
out purposes; and has for one of its objects the
provision of means whereby the relative position
5 of the rule and the head‘ member can be ad
justed for securing the desired relation of the
two parts.
.
Another object of the‘invention is the provision
of a lateral adjustment of the rule relative to one
of the heads so that the parts‘ may be variously
adjusted to suit the convenience of different
users.
'
Another object of the invention is the provi
sion of an aligning'or adjusting means so that
15 the head may be moved ‘through different angu
lar positions or adjusted laterally of the rule for
securing the desired relative position of the two
parts.‘
Another object of the invention is the provision
of a construction whereby the parts may be
'20
aligned without the accurate grinding of certain
surfaces of thehead part which has heretofore
been necessary}
‘
>
Another object of the invention is the provision
' of a construction which from a manufacturing
standpoint may effect a great saving in the manu
facture of the parts, such for instance as a pro
vision by which a multiplicity of parts can be
ground together.
O
>
With these and other objects in View, the in
vention consists of certain novel features of con
struction, as will be more fully described, and par
ticularly pointed out in the appended claims.
In the accompanying drawing:
Fig. 1 is a top plan View of a rule or scale with
several different heads mounted thereon which
are supplied as a combination set;
O
Fig. 2 is a fragmental view of a portion of the
rule, showing the center head in section ‘as
mounted thereon"; .
Fig. 3 is a sectional View of the center head;
‘
Fig. 4 is a section on line 4-4 of .Figure 1;
’ Fig. 5 is a section on line 5—5 of Figure 3.
In the manufacture of a combination rule and
(Cl. 33—-95)
about a pivot point which passes through the
apex of the right angularly related faces was to
accurately position the second face so‘that it may
be ground in a de?nite relation with reference
to the other ground faces and also so that its apex
is at a certain de?nite position with‘relation to
the surface edge of the slot which slides along
the edge of the scale; and I have provided a
means whereby much less expensive procedure
need be had in the‘manufacture as the surface 10
of the slot need not now be in a de?nite relation
to the apex or intersection of the right angular‘
faces of the center head, and I may make certain
adjustments by reason of two pins so that the slot
may be cut deeper and then the ends of these
pins which project into the slot serve as guiding
points to engage the edge of the scale and cause
it to be properly aligned with the apexof the
angle by the two right angular surfaces. By rea
son of these spaced points of contact I may cause
an angular relation to be had between the edge of
the scale and the right angular surfaces'which
engage the work, and thus I do not need to ac
curately align the edgesof the slot‘nor do I need
to have a slot at a certain definite angular rela
25
tion by'reason of my adjusting pins. Further,
by this arrangement, I can grind a multiplicity
of center head surfaces at one position and then
turn this multiplicity about a'pivot'parallel to the
apex of the'angle formed by the two meeting'sur; 30
faces and grind the other surface. Thus it is not
necessary to grind each center head individually
or turn each one about an axis passing parallel
to the edge of the slot which formerly engaged
the edge of the scale, whereby I am enabled ,to 35
eifect a great saving in theprocess of the manu- facture of the parts as well as obtaining an 'in
strument capable of more extended use; and the
following is .a more detailed description of the
present embodiment of this invention, illustrat 40
ing the preferred means by which these advan
tageous results may be accomplished.
With reference to the drawing, 1 have shown
a rule or scale I 0 which is provided with a groove
head on the scale, it was necessary to grind each
l I extending longitudinally in one surface there 45
of, preferably in the center thereof with the op
posite edges l2 and. I3 of this rule parallel to the
center groove 1 I extending midway between these
opposite edges l2 and I 3.‘
Various heads are shown in Figure 1 as 50
mounted on the rule, there being'a square head
I4, a protractor head l5 and a center head l6
illustrated in Figure l. Eachof these heads has
surface individually because of ‘the necessity of
.55 indexing the head from its ?rst grinding position
‘for .engaging the groove 1 I anddrawingone edge 55
41.
centering, testing or truing up heads slidable
thereon, it has been necessary to grind the con
tacting surfaces of the parts including the slot
in the head which receives the scale with ac
0 curacy in order that a proper position and align
ment of the different parts of the assembly may
‘ be had. In the case of the grinding of the center
a slot for the reception of the rule‘ In and‘a means
2
2,085,461
of this slot towards the edge of the rule. This
invention may be applied to any one of these
heads, although it is particularly useful in con
the surface 24 with reference to the surfaces 20
nection with the center head I6, and I will, ac
cordingly, describe the same in further detail in
connection with this center head, although I do
not limit myself to its use in this head for any of
its functions which may be performed elsewhere.
The center head l6 consists of a, body portion
10'. H with arms I8 and I9 extending therefrom, the
surfaces 20 and 2| of which are in right-angular
ly extending planes or at 90° one to the other.
The apex of this angle will be'd'esignated gen
towards the construction illustrated, but I desire
it to be understood that I reserve the privilege of
resorting to all the mechanical changes to which
the device is susceptible, the invention being de
and. 2| was essential.
'
The foregoing description is directed solely
?ned and limited only by » the terms of the
appended claims.
I claim:
10
1. In combination, a rule, a head having a slot
therein for slidably receiving the rule, and means
in said slot for bearing against an edge' of the
erally 22. A slot 23 is cut through the body I6 ' rule at a plurality of spaced portions therealong
and movably mounted with reference to the head
One surface 24 of this slot which has heretofore for movement against said edge portion of the
been required to pass through the apex 22 of the rule for laterally and also angularly adjusting the
angle 'or through the intersection ofth'e right an
position of the head with relation to the rule.
gularly extending surfaces 20 and 2| and also in
2. In combination, a rule, a center head having
2 a plane half way between the planes of these
a slot therein for slidably receiving the rule and I
two surfaces, is now out deeper than heretofore provided with right angularly related work en
so that the surface 24 of the edge of this slot is gaging faces, and means for angularly adjusting
in a plane which does not pass through the apex said head as a unit with reference to said rule
of this angle but israther at one side and al
to position the edgeof ‘the rule in an angular
thoughpreferably so it is not necessarily parallel relation between the work-engaging faces.
15 and one of the arms so as to receive the rule Ill.
to thisplane.
}
A pair of openings 25 and 26 are bored in the
body portion I‘! of the head and tapped to receive
thejthreaded pins 21 and 28 which provide bear
,30 ing‘surfaces 29 and 30 to, engage the edge l3 of
the rule I0. These pins are slotted as at 3| so
that they may be engaged by a_screw driver or
the likelfor adjustment by rotation so as to pro
ject one or the other of ‘these further into'the slot
3. In combination, a rule, a head having a slot
therein for slidably receiving the rule, spaced
bearing members for engaging against an edge
of said, rule and movably mounted in said head
and protruding into said slot, and means to se 30
curesai'd rule laterally and angularly with refer
ence to said head and seated upon said bearings.
. 4. In combination, a center head having right
angularly related work engaging faces with a ‘slot
CH and'thus vary the relative position of the rule in therein for receiving a rule with one edge pass- '
the .head, either laterally by moving both pins
the same amount'to determine whether or not
the edgev l3 passes through the apex of the angle
22 or to oneside thereof for the accommodation
. 140 of the thickness of a pencil line or the like, or
thesevpins 21 and-28 may be adjusted one more
than the other so as to vary the angular relation
' of the edge |3_with-reference to the surfaces 20
and2| and thus adjust the edge so that‘it will
accurately be located in a plane half way between
the plane of~the surfacesl? and 2| orat any
other desired position ‘which may be required.
These pins 21>and‘28 are‘held in adjusted posi
tion by set. screws 44 threaded into the body of
50
the head.
.
t
p '
. In orderto draw the edge I 3 of the rule towards
these pi-nsor bearing points, I provide a pin 35
having a, hook end 36 with spaced engaging
pointsto extend into the groove II. This pin
55 passes through bore 31 in the body and its threads
_ ‘38 are engaged by a nut 39 on the outer end of
the pin‘35 which when turned to move the nut
inwardly, abuts the body H as at .40so7as to move
60
thefbodyand the edge of 'the rule inopposite
‘directions upon such adjustment. This nut has
a‘ knurled‘ handle v4 I for affording a more secure
grasp, while a spring 42 is ‘provided for tending
tomove the parts vin the opposite directionv and
vlfor'h'oldingjthem tight'although'yieldable as more
'65 fully explained in Patent _No. 1,529,209, with
which I am familiar, and which‘ is owned by my
'assignee,
I
'By this arrangement ‘I do' not have ,to accu
' rately cut slot 23 or even ?nish it, but can 0b
to
tain my adjustment by means, of the threaded
bearing pins, thus permitting grinding of a multi
plicity of centering heads to obtain the surfaces
vZll-and 2| at right angles irrespective of their re
lation-to the edge 24 of, the slot, which has not
heretofore been}. possible where the. accuracy of
ing substantially through the intersection of said
faces, a rule in said slot having a groove in one
face thereof, clamping means engaging said
groove to draw the rule towards one edge of
the slot, and adjustable bearing means movably
mounted in said head and projecting through said
slot edge to engage anredge ofthe rule, said
means being adjustable for laterally shifting the
rule'with reference to said head for shifting the
edge of the rule with reference to the intersection
of the faces.
5.'In combination, a center head having right
angularly related work engaging faces with a slot
therein for receiving a rule with one edge pass
ing substantially through the intersection of said 50
faces, a rule in said slot having a groove in one
face thereof, clamping means engaging said
groove to draw the rule towards one edge of the
slot, and adjustable bearing means movably
mounted in said headand projecting through said 55
slot edge to engage an edge of the rule, said
means being adjustable for angularly shifting the
rule vwith reference to said head that it may bear
a different relation to said right angular faces.
6. In combination, a center head having right
angularly related work-engaging faces with a slot
therein for receiving a rule with one edge pass
ing substantially through the intersection of said
faces, a rule in said slot having a groove therein,
means engaging said groove to draw the rule to 65
wards one edge of the slot, and bearing means
projecting through said slot edge to engage the
rule, said means being adjustable for laterally or
angularly shifting the rule with reference to said
head that it may bear a different relation to said 70
right angular faces.
7. In combination, a center head having right
angularly related Work-engaging faces with a slot
therein for receiving a rule with one edge pass
ing substantially through the intersection of saidv 75
3
2,085,461
faces, a rule movably mounted in said slot, means
to draw the rule towards one edge of the slot,
and spaced bearings movably mounted in said
head and projecting through said slot edge to
engage the rule, and means for moving said
spaced bearings to vary the relative position of
‘
, the rule and head.
8. In combination, a center head having right
angularly related work-engaging faces with a slot
10 therein for receiving a rule with one edge pass
ing substantially through the intersection of said
faces, a rule movably mounted in said slot, means
to draw the rule towards one edge of the slot,
spaced pins movably mounted in said head and
15 projecting through said slot edge to engage the
rule, and means for moving said spaced pins to
vary the position of the rule and head.
9. In combination, a center head having right
angularly related work-engaging faces with a slot
said spaced pins to vary the position of the rule
and head, and means in said head to secure said
pins in position therein.
11. In combination, a head comprising a body
portion having a pair of right angularly inclined
arms extending outwardly therefrom from a com
mon intersection and with opposed work-engag
ing surfaces thereon, said body portion being
integrally joined at the apex of said intersecting
arms and extending outwardly therefrom in a 10
plane passing through said apex and between
the planes of the arms, one of said arms and said
body portion having a rule receiving slot the bot
tom surface of which is disposed at one side of
said apex and lies in a plane which is other than 15
coincident therewith, said body having a hole
therein which is disposed transversely thereof
and cross-wise with respect ‘to said‘ slot, a rule
movably mounted in said slot having a central
ing substantially through the intersection of said
longitudinal groove on a side face thereof, a 20
clamping pin in the hole having an inner hook
faces, a rule movably mounted in said slot, means
to draw the rule towards one edge of the slot‘,
said rule groove, means on the outer end of said
‘20 therein for receiving a rule with one edge pass
spaced threaded pins projecting through said slot
edge to engage the rule and threadingly mounted
in the head to vary the position of the rule and
head, and means to secure said pins in an adjusted
position.
'
10. In combination, a center head having right
30 angularly related work-engaging faces with a slot
therein for receiving a rule with one edge pass
ing substantially through the intersection of said
faces, a rule vin said slot having a longitudinal
groove on a side face thereof, clamping means
engaging said groove to draw the rule towards
one edge of the slot, and spaced pins movably
mounted in said head and projecting through said
slot edge to engage the rule, means for moving
end carrying spaced engaging points to engage
pin to clamp the pin in adjusted position, spaced
bearing pins adjustably mounted in said head
and projecting through said slot edge to engage
the bottom edge of the rule, and means for ad
justing said pins to shift the rule laterally or
angularly with reference to said head.
12. In combination, a rule, a head having a 30
slot therein for slidably receiving the rule, and a
means in said slot for bearing against an edge
of the rule and movably mounted with refer
ence to the head for laterally and also angularly
adjusting the position of the head with relation 35
to the rule.
‘
JOHN S. CHAFEE.
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