IMPROVEMENTS IN AND CONNECTED WITH TYPE WRITERS
Year: 1885

page_text: I PHILIP MIDDLETON JUSTICE, of 55 and 56, Chancery Lane, in the County of
Middlesex, Fellow of the Institute of Patent Agents do hereby declare the nature
of my said invention for "IMPROVEMENTS IN AND CONNECTED WITH TYPE
WRITERS" a communication to me from abroad by Thomas Hall of Lyndhurst
New Jersey in the United States of America Mechanical Engineer, to be as
follows:-
This invention relates to improvements in the details of construction of that class
of type writers for which Letters Patent were granted to me dated 26th February
1881 and numbered 827.
The invention consists in the details and improvements in the construction
hereinafter described the general arrangement and operation of the machine
remaining as set forth in the specification numbered 827 of 1881.
According to my present invention I substitute for the spring arm of the spacer
a hinged spacer acted upon by a separate spring placed between it and the short
lever of the spicing mechanism while for the old stop which was secured on a stud
fixed on the lever I substitute an escapement adjuster secured to the edge of the
moveable base plate by a screw stud-Said adjuster consists of a ring slotted to
different depths from its inner edge said slots or recesses being adapted to receive
a projecting piece upon the hinged spacer whose movement on the spacing arm is
consequently regulated by the depth of the slot turned opposite to the projecting
piece while if no slot is turned opposite to it the escapement is held from acting on
the spacer rod-Instead of attaching the signal bell to the frame of the machine
and the bell hammer to the scale rod the motion of which was governed by a
movable striker a fixed striker and a spring I now propose to mount the bell upon
a moveable slide piece on the scale rod, the hammer of the bell being carried within
the bell upon a spring wire with which a fixed striker upon the moveable bed plate
will engage when passing from left to right said striker passing by the wire
without ringing the bell when passing from right to left-This arrangement gives
the additional advantage of enabling the scale rod to be fixed and consequently
strengthens the framework of the machine. I further provide the face of the

page_text: milled head of the feed roller with a series of indentations into which a spring
pointer slips as the bead is revolved and this enables the feed to be accurately
given either by sight or touch. The moveable frame carrying the type I make
with projecting parts adapted to receive pins by which the type frame is secured
thereto said pins may be grooved and the projecting portions of the frame partially
cut through in order to enable a wire spring to drop into the grooves in the pins
when placed therein. The type frame is made flush at the back the projecting
frame being done away with the type themselves being made hard and mounted or
secured to an elastic form or backing. As in the apparatus previously patented
the type form is carried on a frame actuated by an arm, the spur upon which being
placed in the recess corresponding to any given letter of the letter plate, brings
said letter under the fixed printing stud and in order to bring the desired letter or
symbol above or below the usual printing line I provide the arm with a finger
piece connected with a lever Said lever is held in its normal position by means
of a spring, but has a projecting pin passing below such spring and engaging with
a sliding plate capable of travelling in grooves in the arm and carrying the spur or
pointer. With this construction by pressing the finger piece in the middle the
printing will be in the usual line, by pressing above the middle of the finger piece
the spur or pointer will be thrown down or toward the wrist and the type will
print above the line while by pressing the finger piece below the pivot-point the
type will print below the line.

page_text: from left to right said striker passing by the wire without ringing the bell when
passing from right to left. This arrangement gives the additional advantage of
enabling the scale rod E to be fixed, and consequently strengthens the frame work
of the machine. I further provide the face of the milled head G of the feed roller H
with a series of indentations h, into which a spring pointer i slips as the head is
revolved and this enables the feed to be accurately given either by sight or touch.
The movable frame which is to carry the type, I make with projecting parts jat
top and bottom adapted to receive pins k by which the type frame I is secured
thereto, said pins k may be grooved and the projecting portions j of the frame
partially cut through in order to enable a wire spring to drop into the grooves in
the pins when placed therein. The type frame I is made flush at the back, the
projecting frame being done away with, the type themselves being made hard
and mounted or secured to an elastic form or backing generally of rubber.
In Fig. 8 the stud kis shown as a screw stud which holds the spring 1 to movable
frame, said spring curling over type form I and holding it in position.
As in the apparatus previously patented the type form I is carried on a frame
actuated by an arm K, the spur m upon which being placed in the recess in J
corresponding to any given letter of the letter plate I, brings said letter under the
fixed printing stud L, and in order to bring the desired letter or symbol above or
below the usual printing line I provide the aria K with a finger piece M connected
with a lever n pivoted at x. Said lever n is held in its normal position by ineans
of a spring N, but has a projecting pin o passing through and below such spring N
and engaging with a sliding plate O, capable of travelling in grooves O¹ in the arm
and carrying the spur or pointer m. With this construction by pressing the finger
piece M in the middle, the printing will be in the usual line, by pressing above the
middle of the finger piece the spur or pointer m will be thrown down, or toward
the wrist, and the type will print above the line, while by pressing the finger piece
below the pivot point the type will print below the line.
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
1st In a type writer a hinged spacer and escapement adjuster so arranged that
by setting the latter the spaces can make one or more steps on the spacing arm or
be held from acting thereon substantially as described.
2nd In a type writer the combination with the fixed striker attached to the
movable bed plate of a bell constructed as described and adjustable with relation to
the scale rod, substantially as set forth.
3rd In a type writer the combination with the feed roller of a head or end
provided with a series of indentations adapted to receive a spring or other pointer
in order that an even feed may be obtained either by sight or touch, substantially
as described.
4th In a type writer the means of attaching the flexible type form to the
movable frame substantially as and for the purposes set forth.
5th In a type writer the combination with the frame of the type form of a
flexible backing carrying hard type substantially as described.
6th In a type writer an actuating arm so constructed and arranged that
by pressing centrally the printing will be regular and in line, while by varying
the direction of pressure the printing will be above or below the normal line
substantially as described.