Improvements in Typewriting Machines.
Year: 1894

page_text: Date of Application, 24th Oct., 1894-Accepted, 24th Nov., 1894
COMPLETE SPECIFICATION.
Improvements in Typewriting Machines.
I, JOHN NEWTON WILLIAMS of 81 Columbia Heights, Brooklyn, County of
Kings, State of New York, U.S.A. Inventor, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My invention relates to the type-bar mechanism and consists in devices enabling
the ready and convenient adjustment of such mechanism to alignment.
Referring to the accompanying drawings which form a part of this
Specification
Figure I is a sectional elevation of part of a typewriting machine illustrating
my invention.
Figure II is a partial sectional elevation illustrating another form of the
invention.
Figure III is a horizontal sectional view of the same, the plane of section being
through the type-carrier supporting ring.
Figure IV is a vertical sectional view illustrating another form of the invention.
Figures V and VI are sectional elevations illustrating my invention applied to
two other forms of type bars.
I have had particularly in view the improvement of machines such as that
described in my Letters Patent of England, No. 16488 dated 29th September 1891,
in which a type-bar is carried by two arms or links, of which one forms a swinging
fulcrum for the type-bar and the other forms part of a lever which actuates the
type-bar. Figures I to IV illustrate the application of the invention to this form
of typewriter but my improvements are applicable also to other forms of type bars
as is illustrated in Figures V and VI.
1, 1 represent two of the segmental bars or parts of the frame of a typewriter
such as described in my said Patent. In one bar 1, are mounted the pivots 2, of
arms or links 3 which with arms or levers 4 carry the type-bars 5. The pivots 2
are mounted in horizontal slots 6 in the frame 1 and project across the radial
vertical slots 7 in said frame (see Figure III) which receive the lower ends of the
arms or links 3. In Figure III said arms or links are omitted. Each pivot has
connected to it a rod or pin 8 which extends to the outside of the frame-piece 1" and
is there threaded to receive a cylindrical nut 9 which is seated in the bar 1*. The
nut is grooved at 9" to receive the end of a screw 10 which has a screw-threaded
seat in the bar 1* of the frame and is adapted to be adjusted from below by screw-
driver or otherwise. The nut 9 has also a nick 9b or other means of enabling it
to be turned by a screw-driver or otherwise. The engagement of the screw 10 with
the groove of nut prevents axial movement of the nut so that when the nut is
turned by a screw-driver, the rod or pin 8 is shifted axially and so the alignment
of the type carried by the type-bar is adjusted and corrected as desired.
improvement brings the alignment of the machine under the immediate control of
the operator, instead of requiring a machinist every time the alignment needs
adjustment. In "assembling" the nuts 9 and their holding screws 10 may be first
put in and the rods 8 with their attached pivots may then be put in place and
made to engage the nuts by moving the latter. The assembling may be thus done
quickly and conveniently.
The
Here helical
of the slot 6,
Thus, in this
Another form of my invention is shown in Figures II and III.
spring 10 surrounding pin 8 and seated in socket 6ª at the bottom
tends to press the pivot in the direction of the mouth of said slot.
form of the invention, by turning the nut 9, the pin 8 and pivot 2 which bears

page_text: against the outer face of bar 1 of the frame, are either drawn positively in by the
action of the screw-thread, or released to the action of the spring which forces the
pivot and pin outward. By a slight turning of the nut therefore, the position of
the pivot is readily adjusted and the type on bar 5 is promptly brought and held
to alignment.
The modification illustrated in Figure IV involves the substitution of a flat plate
spring 10 for the helical spring 10ª. The opposite ends of spring 10b engage
respectively the frusto-conical surface of a nut 9d and the rear of frame-piece 1 and
may be tightened thereon by set-screws 11. As the nut 9d is thus held against the
rear of frame-piece 1 however much the nut is turned, it is apparent that such
turning will adjust the pin out or in and correspondingly adjust the alignment
of the type.
It is obvious that an equivalent though inferior form of my invention would be
one in which the screw-pins 8 screw into the pivots 2 or into the frame and are
turned to effect adjustment of the pivots. In Figures V and VI, I have shown the
invention applied to ordinary forms of typewriters one upward striking and the
other downward striking, and in both of which the pivots 2 of the type bar 5* are
directly connected thereto instead of being connected through the fulcrum links 3,
as shown in Figures I to IV.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. In combination with a type-bar, an adjusting screw or nut having operative
connection with the type bar pivot or support, adapted to be turned to adjust the
type radially of the printing point, and control the alignment of the type,
substantially as set forth.
2. In a typewriter, in combination with a type-bar, a pivot therefor, a screw-pin,
connected to said pivot and a nut on said pin adapted to hold the same or to be
turned to adjust the pin, the pivot and type-bar radially of the printing point,
substantially as set forth.
3. In a typewriter, the combination of a type-bar, a pivot therefor, a screw pin
connected to said pivot and mounted on the typewriter frame, and a spring and nut
adapted to act in opposite directions on said pin, substantially as set forth.
4. In a typewriter, the combination of the frame-piece 1 having slots 6, the type-
bars having pivots 2, the screw-pins 8 and springs and nuts all arranged and adapted
to operate, substantially as set forth.
5. In a typewriter, the combination of the frame-piece 1, having horizontal slots 6
and vertical radial slots 7, the type bars 5, the carrying and actuating arms 3, 4 and
the adjusting pins 8, substantially as set forth.
6. In a typewriter, the combination of the frame-piece 1, having horizontal slots 6,
the type-bars having pivots mounted in said slots, the adjusting pins for said pivots
and the springs located in said slots and arranged to act on said pivot, substantially
as set forth.
Dated this 22nd day of October 1894.
JOHNSONS,
115, St. Vincent Street, Glasgow, Petitioner's Agents.