Oct. 25, 1932.
1,884,662
w. GRASS
LIGHT REFLECTING TYPE
Original Filed June 13, 1927
":JVENTOR
BY
,4.
ATTQRMY
1,884,662
Patented @ct. 25, 1932.
van
.
.2
drigginal application ?led January 18, rear, Serial No. 1.60;’349. Divided and this application ?led July 15,
Fig. 3 is a transverse sectional view taken
The present invention relates to a light
2.
reflecting type and has more particular refer substantially along the line 3-3 in
Each type element embodying the present
ence to type units which are set up and pho~
tographed as an incident to the production invention is adapted for aligned association
of a negative for intaglio printin_,. This is with other units so as to present a line or
division of my application erial No. other aggregation of characters to the lens
3160,9419, ?led in the United States l’atent @f of the camera. For this purpose each type
iice January 13, 1927 on method and appara element is yieldingly mounted, as illustrated
tus for preparing lithographic printing in the drawings. For details of an apparatus
.
plates, upon which application Patent No. in which the different uses of such type ele
1,821,466 was granted on September 1, 1931. ments are fully disclosed, reference should be
The type unit of the present invention is
adapted to be set up in proper alignment to
form, preferably, a line of type, all of the
as. type units being illuminated so as to provide
sharp contrast between the type characters
on the type unit and the surrounding back
had to my patent, previously referred to.
A preferred embodiment of the present in
vention comprises a triangular rism 11
(Figs. 1 and 2) which may be OI glass or
other transparent or translucent material on
an outer face 12 of which there is set up the
ground. Such a line of type characters is desired character, indicated by the numeral
13. This character 13 is outlined by an
opaque background imposed on the surface
era, lightkbeing passed into and transmitted 12 which leaves the character in the glass or
from the type units and projected into the other material of which the prism is made.
This triangular prism or type element 11 is
lens of the camera with a greatly increased
preferably mounted upon a type carrier. The
brillianoy and sharpness.
' The principal object of the present inven type carrier comprises a head 14 on which the -
then photographicaily reproduced on a sen
W sitized neo'ative by means of a suitable cam
30
tion is the provision of an illuminated type
unit in which the outline of the character
imposed upon a surface of the type is sharp
ly illuminated for photographic purposes.
A further important object of the inven
tion is the provision of a type of this char
type element is glued or otherwise secured,
the head being preferably carried on the for
acter formed as a. transparent or translucent
at 16.
triangular prism which is permanently
35
Ward end of a ?exible carrier body 15 formed
of ?at spring stock. When used in an appa
ratus of the type disclosed in my patent, pre- ~
viously referred to, this carrier body is slotted
‘
The ?exible part 15 and the general con
mounted on a yieldable stem‘ so as to be read struction of the type carrier permits lateral
ily movable into proper position for justify, and yielding movement of the head 14 and
the prism 11 carried'thereby for the purpose
ing to produce a line of printed matter.
Numerous other objects of the invention of correctly positioning each individual typo
will be apparent as it is better understood in alignment relative to an adjacent type of
from the following description, which, taken like character, this operation properly justi
in connection with the accompanying draw fying and aligning the type for the subsequent
operation.
irég discloses a preferred embodiment there photographic
As indicated in Fig. 2 the type prism 11 is
0
.
Referring to ‘the drawing:—- _
Figure 1 is a perspective view, partly
(6 ‘broken away, of a light re?ecting type ele
ment embodying the present invention;
Fig. 2 is'a part elevation, part sectional
adapted for illumination from a source of
light. For this purpose the type prism is
positioned directly beneath an illumination
element 21 which is any suitable source of
electric light su?iciently powerful to obtain
view of the type element, a source and beam the results desired. The light rays, indicated
of light being diagrammatically indicated to by the dotted lines 22, pass from the lamp
59 show its passage through the type body; and 21 and strike a top surface 23 of the prism 11.
00
1,884,002
This light passing into the prism is re?ected face by the use of light and a camera, said
from an inclined bottom surface 24 of the type bein transparent and having a lettered
prism, this bottom surface being disposed at face whic is opaque excepting the outline of
the letter and having a second face at an
an angle of 45 degrees to the surface 23.
The re?ected light rays pass out through angle to the lettered face and throu h which ‘=
the prism in the outlined openings of the the light may enter the type, and aving a
transparent or semi-transparent parts of the third face by which the enterin light is re
‘character 13. In this way only the form of ?ected to the inner part" of the ettered face
light corresponding to the character out and thence through the letter-outline to the
lined by the opaque surface 12 passes from camera, said type having other opaque faces "‘
each light prism. To more completely con between which the light passes to said lettered
_ centrate' this. light the side walls and the face.
WILLIAM GRASS.
bottom wall of the prism are covered with an
opaque coating 25 (Figs. 1 and 3). I have
found that a prism formed according to the
drawing re?ects practically all of the light
striking it and, therefore, transmits the char
acters formed by the transparency in the
opaque face of the prism with great bril
liancy.
.
'
It is thought that the invention and many
of its attendant advantages will be under
stood from the foregoing description and it
will be apparent that various changes may be
made in the form, construction and arrange
ment of the parts, without departing from‘
the spirit and scope of the invention or sac
ri?cing any of its material advantages, the
form hereinbefore described being merely a
preferred embodiment thereof.
I claim:
.
,
'
1. A type for photographic printing, in the
form of a transparent triangular prism, hav
ing the outline of the letter set off on one
of its sides b opaque substance.
110»
I
2. A type or‘ photographic printing, in th
form of a transparent triangular prism, hav~
ing the outline of the letter set off on one
of its sides by opaque substance, and having
its opposite parallel sides opaque.
3. A type for photographic printing, in the
form of a transparent triangular prism, hav
mg the outline of the letter set off on one
of its sides by opaque substance, andv mounted
on ‘a stem which is yieldable laterally for
justifying.
-
-
~
4. A type for photographic rinting, in the
form of a transparent triangular prism, hav
50
ing the_outline of the letterset off on one
of_its sides by opaque substance, said type
being permanently mounted and movable lat
erally.
'
5. Type for printing on a sensitized sur
face
by the use of light and a camera, said
55
‘type being transparent and having a lettered
face which is opaque excepting the outline
of'the letter, and having a second face at an
angle to the lettered face and through which
the light may enter the type, and having .a
third face by which the entering light is re
?ected to the inner part of the lettered face
and thence through’ the letter outline to the
camera.
65
\, '
6. Type for printing on a sensitized‘su‘r
>