US1674363A - Typewriting machine - Google Patents

Description

June 19, 1928. 1,674,363

G. F. HANDLEY 'IE'YPEWRITING MACHINE Filed Dec. 1, 1926 2 Sheets-Sheet 1 7 June 19, 1928. I

G. F. HANDLEY TYPEWRITING MACHINE Filed Dec. 1, 1926 2 Sheets-Sheet 2 Patented June 19, 1928.

GEORGE F. HANDLEY, OF GLENDALE, NEW YORK, ASSIGNC R TO ROYAL TYPEWRITER COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION- OF NEW YORK.

TYPEWRITING MACHINE.

Application filed December 1, 1926'. Serial No. 152,013.

This invention relates to an improved type action which is of the general character'of the type action used in the well-knownRoyal machine, but permits the use of flat sheet metal links of uniform length for connecting all of the key levers with the front links of the type action.

In previous constructions, the links which have connected the key levers to the front links have been made of wire, but in order that adjacent connections might not interfere, it has been necessary to make the looped ends of the links with small and sharp loops. Because of this fact it was necessary to place the holes for said links very close to theedges of the key levers and the front links.

By the employment of a flat sheet metal link and the proper location of the connecting holes in the key levers and front links,

it is possible to employ connecting links which are identical for all banks of the key levers and for all type actions of themachine.

In the drawings:

Figure l is a longitudinal section of a portion of a typewriting machine disclosing the present invention.

Figure 2 is a side view on an enlarged scale of a portion of the various type actions.

Figure 3 is a side view of a key lever of the third or next to the lowest bank. I

Figure 4: is a similar view of a key lever of the second bank.

Figure 5 is a similar view of a key lever of the top bank. I i

Figure 6 is a fragmentary view of the difference in the form of the'heels of the type bars at the center and extreme sides of the segment. 1

The invention is illustrated in a typewriting machine having a frame E in which is mounted a carriage F supporting a platen f against the front of which strikes type bars Gr which are pivoted in the type segment to turn about an axis 9. A series of front links H, H are provided and these are all pivoted upon a rod Iatthe front of the machine. The links H are longer than the links H and have their rearward and downwardly turned ends of a slightly diflerent form. The links H and H are alternately arranged throughout the greater portion of the series of type action and the longer links H are connected to normal to the third and lowest bank of key levers, while the shorter links H are connected" to the top and second banks of key levers. A plurality of longer links H are placed at. each extreme side of the series of type actions. All of these front links are returned position by the usual returning springs h. T

The front links are connectcdto the heels of their respective type bars by links K and a reference to Figure 6 will show that the center type bars have a heel L which is formed somewhat differently from the heel L of the type bars at the sides of the series of type'actions. This arrangement is shown in Patent No; 1,669,167 and is not specifi-- cally claimed herein. The purpose thereof is to assist in obtaining a uniform dip of the key levers throughout the whole series and in all four banks.

The key levers are arranged in four banks and are designated as A, B, C and D from the top to the bottom. They are all pivoted to turn about a common pivotal axis M.

The construction thus far described is or may be identical with that employed in the well known Royal machine. In previous constructions, however, the key levers and the front links have been connected as shown in the above mentioned patent or by connecting links of various lengths which have been pivoted at their ends to the front links and the key levers respectively. The prime purpose of this invention is to provide a series of connecting links N, all of which are identical in size andshape and which are pivotally connected at their ends to the key levers and the front links respectively. A

uniform dip in the key levers of the various banks and a uniform action'throughout the whole series of type bars from the center to the sides is obtained by varying the pivotal points of connections of the links N with the key levers and the front links.

As shown in Figure 2, the links. N. are connected to the front links at four diiferent points which lie in a horizontal plane but are placed at differeut distances from the pivotal axis of the front links. Similarly the links N are connected to the key levers of the four banks at four different points, but these points lie in the arc of a circle which is struck from the pivotal axis M of the key levers as a center I but are differently positioned in a vertical lane.

The top blank ofkey levers A is connected to the shorter front links H by links N which are connected to the front links at points a and to the key levers at points a The point a is the farthestfrom the pivot of the front link and the point a is the farthest from the lower edge of the keylever' A. The second row or bank of key levers B is also connected to'the short lin'ksH by links N which are pivoted tothe front links at'points' b slightly nearer to the pivotal axis of the front link and to the key lever at point's' slightly closer to the lower edge of saichkey lever.

Thethird row or bank of key levers is connected to front links H by links N which are pivoted to the front links at points 0 still closer to the pivotal axis of the front link" and to the key lever at points 0 still nearer to the edgethereof. Th'e'lowest bank of key levers D is connectedto front links H links N which are pivoted to the front links at the points (Z' which are the closest to the pivotal axis of the front'links and to the key levers at points d which are the closest tothebOttOm edge of the key levers. I

By the above described arrangementit has been'foiind possible to use a series of connectmg links N which are uniform in size and shapeand at thesame time obtain a uniform clip" for all of the keys of the keyboard. It

be'n'ote'd that one end of'the connecting 7 since all' of, the actions maybe assembled 7 machine;

separately hef'ore'they are mounted in'the be able to manufacture the connecting" links of a single uniform s ze. Moreover, afiat link pivoted to the key lever and the front link as shown in this case is found tote superior in operation to the old form of wire link which is hooked at its ends into the respective parts. Minor changes may be made" in the precise construction and a principal may be employed in type actions of asomewhat different character without man way departing from the spirit of the invention which is to be regarded as limited only by the scope of the appended claims. 2 i

I claim as. my invention:

series of type actions each of which comprisesa key lever, a front link connected to atype bar, and a connecting link pivoted to the key lever and the front link, the connect'ing links of the entire series being of the It is also a marked advantage to 7 3. A" series'ot type" scaring-east of which comprises a key lever, a? front link cennecte d to a type bar, and connecting link pivoted to'the key lever and the front-link, the ciiii niecting; links of the entire enes being'off the same length but connectedtto the 'fi on t links at points which differin" distance from" the pivot'ahaziis or'then-cnr links; at each bank of key levers.

i; A series of type actions each of which'; comprises key lever, aifront link connected toa typebar, and a1 conn'ectinglink pivoted to the key lever and the front link, the c'on necting links of the entir e' seiies" being of the same length' bnt connected to thekeyfl levers at different vertical points;

5; A series of type actionsf each of which comprises'a key lever, a front'link connected'i to a type'loar, and a" connecting link pivoted to the key lever and'th'efront link, the con nectinglinks of the entire sen-setting ofthesame length hiit connected'to the key levers at different vertical points for each bank of key levers, said points beingtlie' saine distance' from'the pivotal axisof the key levers,

6. A series" of typeactions each 0f witch comprises a key lever, a front link connected to a" type ha'r, anda connecting'link' pivoted to the key lever and the front liiiln'the con: necting links of the" entiresei iesbeifigfof the same length tat: Connemara the front links at points which vary in distalrice; from; the pivotal axis of the front links for eaclrhank of key'levers, andtothe keylevers at different vertical points for each bank of key levers. y

7. A series of type" actions each Ofvvhich comprises a key lever, a front link connected to a type bar, and a, connectinglinkpivoted to the-key lever andthe front link, the "connecting'liiiksof the entire seriesheing jof the same length but connected td' the front 1inksmoints which lie" in a horihonta'f line but vary in distance from the pivotal axis of the front links. for each bankiof key levers, and" to the key levers at points atlthe'same distance from th'e pivotal axis of the key levers but at different points from: the edge of the key levers. v 4 e 8. A, series of ype actions each'ofiwhioh comprisesa key lever, a; front link connected to a type bar, and aconh cting link pivoted to the key lever and the front link, thecoiiat points progressively nearer the pivotal axis of the front links for key levers of the top to bottom rows respectively.

9. A series of type actions each of which comprises a key lever, a front link connected to a type bar, and a connecting link pivoted to the key lever and the front link, the connecting links of the entire series being of the same length but connected to the key levers at points progressively nearer the lower edgeof the key levers from the top to the bottom rows respectively. 7

10. A series of type actions each of which comprises a key lever, a front link connected to a type bar, and a connecting link pivoted to the key lever and the front link the connecting links of the entire series being of the same length but connected to the front links at points progressively nearer the ivotal axis of the front links and to the key evers at points progressively nearer the lower edge of the key levers from the topvto the bottom rows respectively.

11. A series of type actions each of which comprises a key lever, a front link connected to a type bar, said front links being alternately long and short, and a connecting link pivoted to the key lever and the front link, the connecting links of the entire series being of the same length and the links for the top and second banks of key levers being connectedto the short front links and key levers at different points of each for each bank, and the links for the third and lower levers being connected to the banks of key long front links and key levers at different points of each for each bank.

12. A series of type actions each of which comprises a key lever, a front link connected to a type bar, said front links being alternately long'anol short, and a connecting link pivoted to the key lever and the front link, the connecting links of the entire series being of the same length and the links for the top and second banks of key levers being connected to the short front links and key levers at difierent points of each bank, and the links for the third and lower banks of key levers being connected tothe long front links and key levers at different points of each for each bank, the points of attachment to the front links progressively approaching the pivotal axis of the front links, and the points of attachmentto the key levers proiressively approaching the lower edge of the ey levers.

In testimony whereof, I have hereunto subscribed my name.

GEORGE F. HAN DLEY.

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