The First Practical
Burroughs Recorder
The first Burroughs patent to show the successful combination referred to was No. 504,963, applied for May 5, 1892, and issued September 12, 1893. The printing scheme, however, while indicated in the said patent, was applied for in a divisional patent, No. 505,078, issued on the same date. [Drawings] from both these patents are shown on opposite page.
Description of first practical Burroughs recorder
Burroughs Recorder
The new printing device, as will be noted, instead of operating at the bottom of the machine, operates at the rear and prints the paper against a roll mounted outside of the casing.
Outside of adopting the Felt method of printing, the general scheme of construction used in the machine of the former-described Burroughs patent was maintained, except that the levers D, used to drag the denominational actuators down, were omitted, and a series of springs, one for each actuator, was supplied to pull such levers down as are released by key-depression when the common actuator drops under crank action.
Thus the description previously given will suffice for a general understanding of the mechanical functions of the adding mechanism and the general scheme for the setting up of the type in these later patents.
The construction of the type sectors, the printing-hammers and the trigger-latches used to retain the hammers against the action of their operating springs is best shown in the [drawings of patent No. 505,078] on page 136. Fig. 1 shows the normal relation, while Fig. 2 illustrates the same mechanism in the act of printing.
The type sector as shown in [drawings of patent No. 505,078] is marked K, while in the [drawings of No. 504,963] it will be found marked 611ᵃ. They are formed from a continuation of the denominational actuators for the total register in the same manner that the type-wheel gear racks h, of the previously described Burroughs patent were formed.