Year: 1886

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & Co. Patent Agents,
Southampton Buildings, in the County of Middlesex do hereby declare the nature
of my invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to that class of type-writers in which the types are
attached to levers or arms which are actuated by key-levers.
The object of this invention is to improve the mechanism whereby the types are
guided to the point of impression; also to improve the construction of the paper
carriage and the devices, whereby said carriage is actuated and to these ends my
invention consists of the improvements hereinafter set forth.
In the accompanying drawings,
Figure 1 is a longitudinal sectional elevation of my improved type writing
machine.
Figure 2 is a horizontal section of the same on the line x, x, figure 1.
Figure 3 is a cross section of the paper carriage on the line y-y, figure 1.
Figure 4 is an elevation of the guides of the type-levers.
Figure 5 is a cross-section on the line ww, figure 1.
Figure 6 is a side elevation of the feed-carriage.
Figure 7 is a top plan view of the paper-carriage.
Figures 8, 9, 10 and 11 are detached perspective views illustrating the construction
of the type-levers.
Figure 12 is a perspective view of a modified construction of the type-levers.
Figure 13 is a front elevation showing a modified construction of the guides of
the type-levers.
Figure 14 is a cross section on the line 2-z, figure 1.
Like letters of reference refer to like parts in the several figures.
A A represent the side pieces of the frame, and A' the top frame resting on the
same and supporting the paper carriage B and its connecting parts. CC represent
the key-levers arranged side by side between the pieces A A and pivotted on a
cross-bar or rod c, which is secured to the side pieces A, A. The key levers Care
CD027

page_text: held in an elevated position by springs & which bear against the undersides of the
key levers and are secured to a cross piece d¹. d² d² represent tension screws
arranged side by side in threaded openings in the cross-piece d', and bearing against
the undersides of the springs d, whereby the tension of the latter may be regulated.
The upper sides of the key-levers Cabut against the underside of a cross-bar C¹
secured to the side pieces A A whereby the upward movement of the levers C is
arrested.
C* C* represent the keys of the levers C which are secured thereto by soldering
or otherwise. The key-levers C are preferably constructed of thin sheet-metal,
such as brass, tin or the like bent to form a bar, or lapped, as shown in figures 8, 9
and 10, or bent and soldered to form a tube, as represented in figure 11, whereby
a light and strong bar is formed.
DD represent the type-bars forming practically a continuation of the key-
levers C, and D¹ are the types secured to the rear ends of the same.
The type-
bars D are pivotted or binged at e to the rear ends of the key-levers C by vertical
pivots, so that each type-bar can swing in a horizontal plane on the hinge or joint
by which it is attached to its key-lever. This hinge is preferably composed, as
represented in figure 1, of a bifurcated frame e¹ which is secured in a socket forined
in the inner end of the key-lever, and which frame receives the pivots formed on
the upper and lower sides of the outer portion of the type-bar.
The type-bars D are guided in their movements toward and from the point of
impression about midway of their length, between guides or ways E formed on a
cross piece E¹ which latter is secured to the side-pieces A. A. The guides E are
formed on the upper side of the cross piece E¹, and converge upwardly toward the
common point of impression of all the types, the central guide being arranged
vertically, and the guides on each side of the central guide inclined, so that each
guide will direct its key bar toward the point at which the impression is delivered.
Each guide E outside of the central guide is composed of a main inclined portion f
and of upper and lower vertical portions fif, so that upon depressing a key-
lever C its type-bar D is caused to first move vertically sufficiently to permit its
free or rear end to pass over the next adjacent type and clear the same, before the
type-bar turns on its pivot e and begins its ascent on the inclined portion f of its
guide. By this upward movement the type-bar D is swung on its hinge e until it
has reached the end of the incline of its guide and the type presents its face to a
guide or throat piece f³ secured centrally in the top frame A¹, below the point of
impression, when a further depression of the key-lever moves the type-bar through
the upper vertical portion of its guide until its type enters the throat f³, strikes
the paper and delivers the impression. The throat f³ ensures the proper centring
of each type when it enters the same before it delivers the impression upon the
paper.
It is obvious that the centre key-lever and type-bar can be rigidly connected
because their movement takes place in a vertical plane.
It is also obvious that a flexible or spring bar f' may be substituted for the
hinged joint, for the purpose of connecting the key-lever with the type-bar, as
represented in figure 12. In this construction the flexible portion f* would
practically perform the same function as if the parts were jointed and the same
result obtained.
If desired the type-bars may be guided toward the impression point as shown in
figure 13, by inclines F arranged on either side of the centre of the machine,
instead of an individual guide for each type-bar as above described, whereby the
same result would be obtained. The guide-bars F are secured at their upper ends.
to the throat f³ of the top frame A' and at their lower ends to posts f³ f³.
FF represent fine wire-springs which are secured between the type-bars D to
a cross-piece fe connecting the side frames A A. The springs F' simply serve to
return the type-bars D to their proper places after having been operated upon.
G represents a U-shaped spacing frame, arranged under-neath the key-levers C
and which is secured to a rock-shaft g journalled in suitable bearings g¹ in the side

page_text: pieces A A. G¹ represents the space-bar connecting the ends of the frame G and
which is held with its upper surface against the undersides of the key levers C by
springs g² G2 G2 represent the space key secured to the bar G₁ by vertical
standards G³ ³ ³ are adjustable stops which limit the downward movement of
the bar G¹ and which are secured to the side pieces A A. g' represents a spring-
pawl secured to the rear curved portion of the frame G so as to move therewith,
and engaging at its upper end with a ratchet-wheel H, which latter is secured on a
short shaft journalled in bearings h¹ formed on the underside of the top frame A¹.
23 are notches or depressions formed in the upper side of the space bar G¹. The
notches h² h³ are made of different depths and arranged underneath the different
key-levers in such manner that the levers of the types which require but a single
space movement of the carriage, such as i, t, &c, stand above the deepest
notches h³, while the key-levers of the types requiring a double space movement of
the carriage, such as N, U, D &, stand above the shallow notches h² and the key-
levers of the types requiring a triple movement of the carriage, such as M, W &°,
rest on the upper side of the space bar G¹.
It is obvious that the same effect would be produced by making the upper
surface of the space-bar G' straight, and arranging the key-levers at greater or less
distances above the same, so that the key-levers requiring a triple space movement
rest directly upon the space-bar and move the latter at once upon being depressed,
while the key-levers requiring a double or single space movement stand at varying
distances above the space-bar and have a proper amount of dead movement before
moving the space-bar.
Upon depressing the key-lever requiring a triple space movement of the carriage
the space-bar G immediately takes part in such downward movement, and causes
the pawl g to ride over a sufficient number of teeth on the ratchet-wheel H to
effect the required lateral movement of the carriage B, when the space-frame G is
returned to its former position by the springs g². The notches h³ permit the
key-levers C arranged above the same to travel downward a certain distance before
they come in contact with the space-bar G¹, whereby the pawl g' of the frame G¹
is lifted sufficiently to engage over the number of teeth on the wheel H to effect a
single or double space movement of the carriage to correspond with the character
of the key-lever which has been depressed. By this construction the spacing
between the various printed characters is varied in accordance with the space
required for the same, whereby the printed matter is caused to assume a neater and
more uniform appearance than when the spaces between the various widths of
characters is equal.
I represents a horizontal guide-bar arranged in brackets i in the top frame A¹.
The carriage B is supported and guided at its rear end by collars or sleeves ¿¹
moving on the rod I, and at its front ends by a central roller or wheel traversing
a track or way ³ on the frame A'. 1¹ represents a rack-bar arranged between the
vertical side frames of the carriage B and which is capable of slight vertical
movement in guides or ways formed on the carriage B. The rack-bar I¹ engages
with its lower toothed portion with a screw-wheel J which is secured to the shaft h
so as to turn therewith.
j represents a horizontal rock-shaft mounted in bearings on the carriage B,
and which is provided at one end with a handle or thumb-piece whereby the
rock-shaft can be turned. ³ ³ represent two short fingers or arms secured to the
shaft ; and which engage with their free ends in openings or slots formed in
ears on the upper portion of the rack-bar I. K K represent spiral springs
surrounding the shaft and which are secured to the frame B and bear with their
free ends upon the arms j³, whereby the rack-bar I' is held down upon the frame B
and in engagement with the screw-wheel J. K¹ K¹ represent projections or noses
on the bar 1 which rest upon the frame B and limit the downward movement of
the rack-bar I. By turning the thumb-piece j2 in the proper direction the fingers³
will lift the rack-bar I' out of engagement with the screw-wheel J, whereby
the carriage is disengaged from the screw-wheel and free to be moved in either

page_text: direction. Upon releasing the thumb-piece 72 the springs K return the rack I¹ to
its former position and cause it to again engage with the wheel J.
The carriage B is moved in the proper direction by turning the screw-wheel J by
means of the ratchet-wheel H, and pawl g' and space-frame G as above described.
k represents a detent pawl arranged underneath the top frame A¹ and engaging
with the ratchet-wheel H. ² represents an inclined toothed-bar secured to the top
frame A¹ represents a segmental tooth formed on the underside of one or both
collars of the carriage B and arranged with its front end immediately in rear of
the bar K2, as represented in figure 1. The tooth engages between the teeth
of the bar K² when the carriage B is lifted or turned upon the rod I thereby
preventing the carriage B from moving on the rod I and insuring a return of the
carriage to its former position when the carriage is lowered.
L represents the platen arranged on the frame B of the carriage above the
throat f3 and composed of a metallic frane or plate which is provided on its
underside with an impression pad of india-rubber or other suitable material,
which is detachably secured to the frame so that it can be renewed when worn
out. The frame is provided at both ends with ears 12 which are pivotted at 1³ to
a supporting frame M. The ears are provided with segmental slots m through
which pass screws m', whereby the platen is secured in position in the supporting
frame M. Upon releasing the screws m' the platen can be turned on its pivots to
present a different portion of the pad to the types. The supporting frame M is
hinged at one end to the carriage frame B as shown at n, figure 7, and provided at
its opposite end with a thumb-piece n', whereby it can be lifted or turned on its
pivots.
o o¹, represent the feed-rollers journalled in the bearings in carriage-frame B,
and 02 03 are similar rollers resting on the rollers o, o¹ and journalled in bearings in
the supporting frame M of the platen.
P represents a ratchet-wheel secured to one end of the shaft m² of the front feed-
roller o.
P¹ represents an elbow-lever pivotted on the shaft m², and having its
lower arm P² extending rearward on one side of the carriage frame which arin is
provided with a pawl p engaging with the ratchet-wheel P while its upper arm P³
extends upward beyond the carriage-frame. 2 is a detent-pawl pivotted to the
carriage frame B and engaging with the ratchet-wheel P. p represents a nose
formed on the curved rear end of the lower arm P2, which supports the latter on a
pin secured to the carriage-frame. When the carriage has traversed the required
distance and it is desired to return the same, to feed the paper forward the lever P
is turned in the direction indicated by the arrow in figure 6, thereby turning the
roller o by the pawl p² engaging with the ratchet-wheel P and feeding the sheet of
paper by means of the rollers o, o². When this movement of the lever P¹ takes
place the rear curved end of the arm P' comes in contact with the underside of the
forward arm of the thumb-piece j³ of the shaft j and turns the latter, whereby the
rack-bar 1 is lifted out of engagement with the screw-wheel J and is free to be
brought back. In this manner the paper carriage is released from its actuating
mechanism by the same movement of the elbow-lever P', whereby the paper is fed
forward, so that the paper carriage is free to be moved back on the supporting bar I.
Qis an adjustable stop secured in an elongated opening in the carriage-frame B,
whereby the throw of the elbow-lever P₁ is regulated, thereby regulating the
distance between the lines.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated
to me by my foreign Correspondent I declare that what I claim is :-
First. In a type-writer, the combination with a key-lever, of a type-bar jointed
to the key-lever and capable of lateral movement with reference to the same, and a
guide whereby the type-bar is laterally deflected and directed toward the point of
impression, substantially as set forth.

page_text: Second. The combination with a series of key-levers C, of a series of type-bars D
jointed thereto and capable of lateral movement with reference to the same, and a
series of converging guides E whereby the guide-bars are laterally deflected and
guided toward the point of impression, substantially as set forth.
Third. The combination with the key-levers C and type-bars D flexibly
connected therewith, of the guides E, throat f³ and platen L, substantially as set
forth.
Fourth. The combination with the key-levers C and type-bars D jointed to the
same, of the guides E composed of the inclined main portions fand vertical top and
bottom portions f1f2, substantially as set forth.
Fifth. The combination with the carriage B provided with the guides *, of the
rack-bar 1 arranged in said guides, the rock-shaft ; provided with arms j³ con-
nected with the bar I', and springs K whereby the bar is depressed, substantially
as set forth.
Sixth. The combination with the frame A¹ provided with a toothed-bar K², and
guide-rod I, of a paper-carriage B hung on said guide-bar and provided with a
tooth adapted to engage with the toothed-bar K² when the carriage is lifted,
thereby preventing lateral displacement of the carriage, substantially as set forth.
Seventh. The combination with the paper-carriage of the pivotted frame M and
the segmental platen L pivotted to said frame M and secured adjustably therein,
substantially as set forth.
Eighth. The combination with the paper-carriage provided with a stationary
segmental platen, of a feed-roller o provided with a ratchet-wheel P, the rock-
shaft provided with a thumb-piece 2 rack-bar I and screw-wheel J, and the
elbow-lever P, provided with a pawl p engaging with said ratchet-wheel, and
having its rear end adapted to strike the thumb-piece j², substantially as set forth.
Dated thig 0th day of Fobrave 1886
HASELTINE, LAKE & Co.,
For the Applicant.