To all whom it may concern:
Be it known that I, HENRY DAVID MILLER,a citizen of the United States, and a resident of Oklahoma city, in the county of Oklahoma, and State of Oklahoma, have invented certain new and useful Improvements in Automobile Steps, of which the Following is a specification.
My invention relates to improvements in automobile bodies, consisting more particularly in an improvement in the steps by means of which entrance is facilitated, and it consists of the constructions, combinations and arrangements herein described and claimed.
An object of the invention is to provide what might be termed a disappearing step for an automobile, the purpose of which is to replace the well-known stationary running board.
Another object of the invention is to provide a step which is so connected with the door that the step is retracted to a closed position when the door is closed and moved to an extended position when the door is opened.
Other objects and advantages will appearing in the following specification, reference being had to the accompanying drawings, in which:
Fig. 1 is a detail cross section through a portion of an automobile body showing a swinging type of step connected with a door, the door and step being closed,
Fig. 2 is a similar view showing the door and step open,
Fig. 3 is a detail plan view of the parts shown in Fig. 1,
Fig. 4 is a detail plan view of the parts shown in Fig. 2,
Fig. 5 is a detail sectional view corresponding with Fig. 1 but showing a modification wherein the step is slidably extended and retracted instead of swung down and up,and.
Fig. 6 is a detail plan view of a portion of the structure in Fig. 5 showing one of the springs which causes the closure apron to follow the step.
The construction comprises an automobile door 1 which is hinged at 2 so as to swing outwardly according to the universal custom. This door is mounted on the body 3 of the automobile. The body is supported by a chassis of which the channel iron 4 (Figs, 1 and 2) is a part. The channel iron supports the floor 5 of the automobile. The front wall 6 of the seat 7 furnishes a support upon which a part of the invention is mounted.The automobile body includes a side closure 8 which in some cases curves downwardly and in other cases is straight, but in all cases is for the purpose of hiding parts of the chassis and mechanism which would otherwise be visible from the sides of the automobile.
The parts so far described are all common in automobiles. The improved automobile, that is to say an automobile which is constructed in accordance with the invention, will have no running board. In place of this running board, provision of a step 9 is made. This step and the parts by which it is operated, constitute the invention. The Step 9 has brackets 10 at each end. These are mounted upon a step shaft 11 so that the step 9 is able to turn from the closed position in Fig. 1 to the open or extended position in Fig. 2.
Bearings 12 support the shaft 11 and also a shaft 13 upon which the arms 14 and 15 of a bell crank are fixed. These arms are not made into one bell crank, as might appear from Figs. 1 and 2, but are separated as shown in Fig. 4. This is for the purpose of getting the arm 14 in the middle of the step 9. The arm 15 is situated near that side of the step 9 which is nearest the hinges 2 of the door.
The shaft 13 is situated slightly lower than the shaft 11 and a little to the front, as shown in Figs. 1 and 2. The shaft 11 serves as a stop to limit the downward or extending movement of the step 9. The arm 15 of the bell crank engages the shaft 11 and thus forms the stop. The outer end of the arm 14 has a slot 16 through which it engages the pin 17 of a bracket 18 situated beneath the step. This slot is sufficiently long to compensate for the differential motion of the step and of the arm 14 of the bell crank which necessarily occurs by virtue of the fact that these parts swing on different axes.
Fastened to the bottom of the step 9 is a metallic sheet or apron 19. This apron is of a configuration corresponding to the cover portion 8 of the automobile body.This cover has an opening 20 through which the step 9 moves to the closed position (Fig. 1). This opening is filled or closed by the apron 19 when the step is closed as described, thus preserving the contour of the cover 8 and making it appear as though the automobile had no step.
A link 21 is connected between the free end of the arm 15 and the corresponding end of an arm 22 of a bell crank which is pivoted at 23 upon a suitable support 24 on the front wall 6 of the seat. The other arm 25 of this bell crank has connection with a short link 26 which carries a ball head 27.This ball head is clamped in position in the socket 28 of a bracket 29 on the door 1. The socket 28 is perfectly rigid on the bracket and the bracket is fixed to the door. The socket 28 therefore stands facing the observer (Fig. 2) when the door 1 is opened.In view of the fact that the link 26 is movable only in a direction crosswise of the automobile, provision for this particular motion must be made at the ball and socket joint. The socket is therefore slotted at 30 (Fig. 2) to permit the bracket 29 to describe.The 90°of movement between the closed and open positions of the door 1.
The link 21 passes through an opening 31 in the floor 5 of the automobile. This opening is but a little wider than the link is thick and therefore does not mar the appearance of the floor. The apron 19 is fixedly attached to the step 9, one or more braces 32 being employed for the purpose of supporting the otherwise loose lower end of the apron. It is to be observed that the arm 14 of the bell crank operates in the space between the apron and the bottom of the step,
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