close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2407595

код для вставки
Sept 10, 1946. '
F. H. WHITELEY
2,497,594
LETTERING INSTRUMENT
‘Filed June 6, 1945
BY
‘
A'rroRNEY
Patented Sept. 10, 1946
'
UNITED
2,407,594
STATES PATENT
OFFICE
,
2,407,594
LETTERING INSTRUll/IENT
7
Fred Howard ‘Whiteley, Kansas City, Kans.
Application June 6, 1945, Serial No. 597,800
5 Claims. (Cl. 33-41)
1
2
This invention relates to lettering instruments
of the character usually employed by draitsmen
in setting down guidelines for the later pro
engage the straight edge of a T-square or ‘the
like, when the instrument is to be drawn across
a sheet of paper mounted'on a drawing board
duction of a group of letters or ?gures, and has
for its primary aim to provide a device of said
not here shown.
‘
‘
,
The salient Hi extending outwardly from the
character that is simple to operate, inexpen
edge of body 10 opposite from guide edge l2,
sive to produce, accurate and convenient in its
should be contoured substantially as illustrated
to accomplish the desired end of positioning a
group of marking elements, as shown in Fig. 4.
An arm I6 is pivotally mounted upon body it
function, and adjustable to the desired size of
letter.
,
This invention has for its further aim to
provide a lettering instrument that has means
thereon for‘ indicating the distance between lines
of lettering and for disclosing to the operator the
space between a set of three lines that are ‘to be
employed as guides in producing the letters or H5
numerals.‘
through the medium of structure clearly shown
in Fig. 5. Body I0 is recessed as at IE to receive
the head portion’ of arm l6 and one edge of recess
I8 is arcuate to conform to a similarly arched
edge 20 on arm IS.
The arcuate edges of recess l8 and the head
,
of arm l6 are concentric with the axis of rota
A further object of my invention is the provi
tion- established’ on screw 22, which cooperates
with thumb nut 24.
'
thereof, a group of marking elements disposed
A pointer 26 is established on the free end
in such fashion as to be in substantial alignment 20
of arm l6 for the purpose more fully hereinafter
horizontally, when the movable portion of the
described. Also, arm 16 has a notch 28 to re
instrument is at one end of its path of travel.
ceive salient I4 when arm I6 is at the end of
This invention has for other objects the pro
its path of travel in one direction around the
vision of a lettering instrument capable of meas
uring angles; having the capacity of simultane 25 axis of screw 22.
A pair of marking elements 30 and 32 re
ously drawing the required number of horizontal,
spaced apart lines to be used as lettering guides;
spectively, are mounted on arm l6, one on each
side of notch 28. These elements are on a radial
and susceptible of a large number of additional
line extending from the axis of screw 22 and
uses-all because of the character of structure
30 when the arm is in the position shown in Fig. 4,
chosen to embody the invention.
all marking elements and screw 22 are in sub
It has heretofore been customary to employ
stantial alignment.
crude and inaccurate instruments for establish
A scale 34 cooperates with marker 36 in teach
ing guide lines for lettering, which instruments
were objectionable because of inaccuracies and
ing the operator the position of elements 30 and
the absence of means for simultaneously drawing ‘ 32. As these elements are swung around the ,
a group of lines, the distance between which were
axis of screw 22, the distance between lines 38
not governed by the devices per se.
and 40 which marking elements 30 and 32 pro
In the drawing:
duce, becomes greater until the arm is moved to
Fig. 1 is a top plan view of a lettering instru
a position where elements 30 and 32 are on a
sion of a lettering instrument having as a part
ment made in accordance with the present inven
tion.
Fig. 2 is an edge elevational view thereof.
Fig. 3 is an end elevational view of the instru
ment.
Fig. 4 is an inverted plan view of the letter
ing instrument.
40
vertical line or a line perpendicular to edge I2.
Marking element US will always remain sta
tionary so far as arm I6 is concerned, and there
fore, the line 42 which this marking element l4
produces, will be the base line of the lettering.
45 Regardless of the position of arm l6, therefore,
the proper proportions will be maintained be
Fig. 5 is an enlarged fragmentary cross sec
tween lines 38, 40 and 42.
tional view taken on line V—V of Fig. 2, and
In the operation of the instrument and when
looking in the direction of the arrows; and
a number of lines of lettering are to be pro
Fig. 6 is an enlarged cross sectional view taken 50 duced, pointer 26 is employed as a guide and the
on line VI-—VI of Fig. 1.
In the form of the invention chosen for illus
tration, the numeral l0 designates a body formed
of light material, preferably transparent in char
acter, and having a guiding edge [.2 designed to
last or lowermost line 42 of the set of lines just
made, is utilized by registering pointer 26 there
with. When this is done, guide edge [2 is placed
against the straight edge of a T-square, for ex
' ample, and the instrument drawn in the direc
2,407,594
3
tlon of the arrow shown in Fig. 1.
4
Thus, a
spacing instrument as well as means for pro
2. A lettering instrument of the type described,
com-prising a body having a guiding edge; an arm
duclng guide lines for lettering, is available.
pivotally mounted on the body; and a plurality
Straight edge 44 on arm I6 is usable as means
of marking elements, certain of the elements
for drawing lines at the desired angle with re
being on the body and the remaining elements
spect to edge I2, and under such conditions, the
being on the arm, the marking elements and the
scale 46 is brought into play.
pivotal connections between the body and arm
The marking elements are each formed as
being in substantial alignment on a line parallel
shown in Fig. 6, and comprises a tubular standard
with and spaced from the said guiding edge when
48, a head 50 and a. screw-threaded shank 52 on 10 the arm is at one end of its path of movement
said head to enter the bore of standard 48. A
about the pivotal connection, said arm having a
marking lead 54 is frictionally gripped by standard
pointer thereon at the free end thereof and serv
48 and projects therefrom to a point where the
ing as an indicator for the positioning of the
end will engage the paper on the drawing board.
instrument when guide lines for more than one
Standard 48 is shouldered as at 55 and a shoul 15 row of lettering are to be established.
'
der 58 on body ill or arm It, as the case may be,
3‘. A lettering instrument of the type described,
serves as a purchase for a spring 68 held under
comprising a body‘ having a guiding edge; an
tension by nut 62. Thus, the marking element
arm ,pivotally mounted on the body; a- pair of
assemblies may be removed from their operative
spaced apart marking elements on the arm; and
position and the marking lead 54 may be fed as 20 a single marking element on the body, said body
fast as used.
It is understood that lettering instruments hav
ing physical characteristics di?erent. from those
and arm being formed and so supporting the ele
ments» as to have the marking element on the
body between the pair of markinggelements on
the arm when the arm is at one end of its path
departing from the spirit of the invention or scope 25 of travel about the pivotal connection.
of\th.e appended claims.
4.. A lettering instrument of the type described,
Having thus described the invention, what is
comprising a body having a guiding edge and an
claimed as I new and desired to be secured by
outwardly projecting salient at the opposite edge
Letters Patent is:
thereof; an arm pivotally mounted on the body
illustrated and described, might be made without
1. A lettering instrument of the type described.
comprising a body having a guiding edge; an arm
pivotally mounted on the body; and a plurality
of. marking elements, certain of the elements
being on the body and the remaining elements
and having a notch formed thereon to receive the
salient; a marking element. carried by the salient;
and a, marking element on each side. respectively
of the notchwhereby the marking elements are’
substantially in alignment when the salient is
being on the arm, the marking elements and the, 35 within the notch.
pivotal connections between the body and arm
5. A lettering instrument of the charaeter set
being in substantial alignment on a line parallel
forth in claim 4, wherein the substantially aligned
with and spaced from the said guiding edge when
marking elements are on a radial line extending
the arm is at one end of its path of movement
from the pivotal mountingr of the arm.
about the pivotal connection.
' FRED HOWARD WHITELEY.
Документ
Категория
Без категории
Просмотров
0
Размер файла
323 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа