The weight from above pushed the friction fit spider out of the hole. The stack spindle was a pull-out that was swapped for a large diameter version. The friction of the large diameter hole was much greater than the small hole. The hang-up rate was high and this changer wasn't really useful. Jukeboxes of that era stored the records narrow edge down. Records were not produced with great precision, most were slightly warped, had slightly off center holes, the diameter wasn't very precise, etc.
The large hole simplified the mechanics of handling the discs. For example, to let the juke box select the record using the edge and place it on a horizontal spindle that expanded to grip the disc. I remember seeing record changers handling the 45s with snap-in spiders without any problems, though I'm sure there were a few instances in which a malformed record or spider would cause the assembly to separate.
The automatic large-hole adapters were originally round and smooth, with a rotating lower section to allow a large-hole record to be played as precisely as a small-hole one. But at time went on, space and cost pressure led to flat adapters, some of which had a contorted Z shape and no moving parts; these usually did a passable job of dropping the records one-at-a-time, but they didn't align the record on the platter as accurately as their round predecessors.
One combination that would worked very badly would be an attempt to play a UK record with the center plug clipped out on a changer with one of the later flat adapters. Some of the last record changers, particularly BIC and some high-end Japanese models, were shipped with no adapter; maybe the intention was to have the user put inserts in all large-hole records. It would have been a shame to have a changer that could only handle long-play records, since singles need the automation the most.
For a look at the only changers that RCA nearly gave away for a few years, do a search on YT for "45 player". These machines were hardly high-end, but they were impressively fast. Due to RCA's intransigence, some consoles were even sold with one changer for 45s and one for everything else. I'm not sure about this but guessing the term 'spider' only referred to the round insert on a 45rpm record that could be punched out to access the large round spindle hole, because the 4 little tabs sticking out from the round insert look like the short legs of some round-bodied garden spiders.
I always wondered why they had the large holes here in the U. Re: Why do 45s have large holes in the middle? The main drawback with the large hole is records easily going off center. You do not have the required permissions to view the files attached to this post. It came close to failing as badly as video discs, but it really took off in sales and turned out to be one of the best recording ideas of the century.
RCA practically gave away many of its cheaper 45 players in order to sell 45rpm records. That warm tube sound can usually be overcome by turning up the treble. They chose it for ease of handling records then claimed that it was more reliable, had fewer moving parts and was the "magic" of the whole system.
Oh, I forgot to note that the Seeburg A of could play both 10in and 12in records intermixed, all while using the small center hole. Again, the size of the center hole has nothing to do with jukebox and everything to do with RCA 45rpm changer. Those are simply remote selector units, connected to a full sized or hideaway jukebox elsewhere in the location. Really, what you people dream up…. I read Mr. But as a little kid, I got to hear a lot of good music that way, because mom was a good enough sport to not leave until we heard our selections 3 plays for 25 cents!!
I think it was easyer for engeneers to develop in that time their devices to run smoothly with this big holes singles as with the thin holes. Also for maintnance people is it easyer to adjust after a long period of service. In that time the woble wile the centers were not drilled excact in the middel was not so disturbing for the people.
Actually they were more amused that musicwas playing. Therefore after decades the purist under them surched for beter gear what result in what now exists. The original RCA players developed for the new 45s did not stop the turntable during the change cycle.
There would have been no slippage, as the stack on top was already spinning. The large hole was made so the center spindle could contain the dropping mechanism instead of earlier 78 and LP changers used complicated dropping mechanisms and stabilizer arms. The on conventional changers stack of records did NOT spin at 78 and would have to come up to speed quickly when dropped. Automatic changers in the 78rpm era would have given Rube Goldberg nightmares.
Some used spatula-like devices to drop the records, some makes tilted the whole mechanism to drop records after playing down a chute into the cabinet. The first attempt was a bit of a shocker for me. Seeing this thread so heavily populated was quite exciting. You all should post comments here more often! I have very occasionally run across the slightly-too-small LP center hole that has to be forced down on the spindle.
Once it does, stop!! There are are different threads here explaining the reason for the large center hole. The reason for the large hole was that jukeboxes had to able to tell the difference between 33 rpm 4 track 7 inch records many earlier 4 track records played at 33 rpm and 45 rpm singles.
There was a large hub and a spindle installed on the platter with the spindle having a trip wire attached , if a small hole 4 track record was selected it would push the trip wire in the hub would then descend and the speed would change to 33 rpm.
After playing and the record returned to the magazine the hub would ascend and the jukebox would default back to 45 rpm. This was the newest speed originally intended for 7 inch singles so this designed to have a large center hole.
Your email address will not be published. This site uses Akismet to reduce spam. Learn how your comment data is processed. Skip to content. April 15, December 15, Alan Cross 44 Comments. Why would they do something like that? Jukebox operators sold off the singles cheaply after a few weeks. The going rate in some shops in the late 60s was two shillings 10p compared to the new price of 6s 8d 33p. Early HMV. Not dinked. It was made like this.
Ex-juke box. Definitely ex-juke box dinked copy. UK copy, but NOT dinked. It was pressed by Polydor so was made with a large hole. It does not appear dinked, and was pressed by Polydor BUT that is not an original Polydor spider in the centre. It has the correct original Polydor spider. Still these spiders often came out and had to be re-inserted.
So if a disc has a large hole it could be for one of several reasons. Interesting addition of a strengthening circular liner around the large hole. Or it could be designed for sale to juke boxes but never played on them. Just to add to the chaos, some later juke box EP discs were produced in America with small holes. Some record owners had early large spindle players, or perhaps they imported players with large spindles. All the records were clean, and the couple I bought are crackle free. And every single one had the centre knocked out.
That at least halves the value, and probably is even worse. Without centre? A fiver at most. It comes down to appearance: no collector wants a 45 in a die-cut sleeve with a large centre hole.
Look above the number on the right at the hole punched in the disc. It was a cut-out a remaindered disc and America always marked its cut outs. LPs had a notch cut in the sleeve and singles had a hole punched on the centre label. Many American 45s are cut outs, and rumour has it that Northern Soul DJs stamped holes in perfectly good discs to make them look like obscure cut-outs.
Modern reggae records from the mids on, appear on hundreds of labels. Some are reissues, some are not.
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