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Патент USA US2104995

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Jan. 11, 1938.
Filed NOV. 25, 1936
Patented Jan. 11, 1938
William Frederick Hutoheson, Hamilton, Ontario,
Canada, assignor of one-half to Herbert James
La?amme, Toronto, Ontario, Canada,
Application November 25, 1936, Serial No. 112,692
1 Claim. (01. 84-306)
The invention relates to improvements in de
parallel to the neck with the clamp bar dis
vices for retaining the strings of a musical in
posed on the inner side of the depending pegs and
strument in tune, as described in the present the guard plate on the outer side of the pegs.
speci?cation and shown in the accompanying The members are of a greater length than the
5 drawing that forms part of the same.
overall distance between the pegs, and the guard 01
The object of the invention is to produce an plate is of a width to laterally protrude beyond
e?lcient and reliable attachment for a guitar or
other stringed instrument for the purpose of
locking the pegs in set position in order to main
V) tain their adjustment when the strings are tuned
to a given pitch.
A further object is to construct the attachment
in the form of a guard to shield the pegs in the use
and handling of the instrument.
A distinctive feature of the present invention is
that it enables stringed instruments to be re
tained in tune irrespective of wear on the peg
The invention presents a further and important
3.) feature in that it eliminates objectionable inter
ference resulting from rattling pegs as the instru~
ment gives out deep vibrations, which rattling is
attendant on wear of the peg gearing.
Referring to the accompanying drawing, Fig
ii; 3 ure 1 is a plan View of the invention applied to the
pegs of a guitar.
Figure 2 is a side elevation thereof.
Figure 3 is a plan View of the invention re
moved from the musical instrument.
Like numerals of reference indicate corre
sponding parts throughout the ?gures of the
drawing of the invention.
In the drawing, a practical embodiment of the
invention is shown by way of illustration as ap
:.r, plied to a guitar. ' The conventional neck of the
guitar is depicted at 5 and the strings thereof at
6. The three strings of one side of the neck are
as customary respectively wound on the spindles
l, ‘l’ and 'l”;
those of the other side are
.14) wound on the spindles 8, 8’ and 8".
The individual gearing of the spindles is de
noted at 9. This gearing severally connects the
pegs 50, iii’ and H3" at one side of the neck to the
spindles i, ‘l’ and l”, and likewise connects the
.7v pegs H, H’ and H" at the other side to the
spindles 8, 3’ and 8". As is well understood in
the art, the pegs are thus individually turnable
to regulate the tuning of the strings.
In carrying out the invention, a locking device
5 0 is attached to the aligned pegs at one side of the
neck and a similar locking device is attached to
the aligned pegs at the other side thereof.
The locking device for the pegs ii), is’ and ill"
comprises a clamp bar l2 and a guard plate l3.
These members are co-extensively arranged
the pegs so as to shield the same from striking
an object in the handling of the musical instru
The members are preferably constructed of 10
suitable metal although it is not proposed to limit
the invention in this respect. The members are
arranged to grip the aligned pegs about their
shank portions adjoining the heads by which they
are manually turned. To this end the opposing 15
faces of the members are notched as at M so as
to form recesses that embrace the peg shanks.
It is manifest that one of the members may be
recessed to a greater degree than the other, or if
so desired the recesses might be entirely con?ned 20
to one of the members without departing from the
spirit and scope of the invention.
The two members are united by means suited
to apply clamping pressure on the intervening
peg-shanks. This is desirably accomplished by a 25.
longitudinal series of headed screws I5 having
threaded engagement with the clamp bar and
lodged in holes in the guard plate.
It is understood that other fastening elements
may be substituted for screws if so desired.
It will be gathered that the clamping members
bind the pegs against turning, and that said
members are not otherwise attached to the musi~
cal instrument. To adjust the pegs the screws are
merely slackened and again tightened when in the
tuned condition of the instrument.
It will be noted that the clamping bar is much
narrower than the guard plate, which plate im
parts the necessary rigidity to the structure. The
clamping bar may be thin enough to possess a cer 40
tain amount of spring or ?exure as to permit it to
uniformly bind simultaneously on all three of the
The locking device for the pegs H, H’ and H"
is identical to that just recounted. The clamping 45
bar is denoted at it’ and the guard plate is de
noted at it’; while the screws are indicated at
This duplicate locking device operates of
course in the same manner as that already de
What I claim is:»—
A peg-lock and guard for a stringed musical in
strument having a plurality of spaced pegs mount
ed transversely at the side of the neck and geared
to the spindles onwhich the strings are Wound; said 55
peg-lock and guard consisting of a ?at rigid guard
plate spanning the pegs and extending laterally
outward from the shanks thereof so as to shield
the peg-heads from accidentally striking an ob
ject in the handling of the instrument, the guard
plate being of a width greater than half the
breadth of the peg-heads so as to extend laterally
beyond the same, a comparatively thin clamping
bar spanning the pegs and extending inwardly of
the shanks thereof oppositely to the guard plate,
said clamping bar being of a ?exible character to
bind uniformly on the shanks, and a longitudinal
series of headed screws extending through the Cl
guard plate and threadedly engaging the clamp
ing bar.
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